Want To Be A Lab Animal Technician? You Gotta Pass This Test
Lab animal technicians study and care for a variety of animals involved in research programs. They are responsible for providing basic care to lab animals such as mice, rats, reptiles, dogs, and primates.
Want to be a Lab Animal Technician? You gotta pass this test
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Questions and Answers
- 1.
The correct name for the acronym IACUC is
- A.
Institutional Animal Care and Use Committee
- B.
Institutional Annual Costs and Use Committee
- C.
Institutional Animal Committee and Use Council
- D.
Informational Animal Care and Use Committee
Correct Answer
A. Institutional Animal Care and Use CommitteeExplanation
The correct answer is "Institutional Animal Care and Use Committee". This is the correct name for the acronym IACUC. The committee is responsible for overseeing and ensuring the ethical treatment and use of animals in research and teaching activities conducted at an institution. They review and approve protocols involving animal research, monitor animal welfare, and ensure compliance with regulations and guidelines.Rate this question:
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- 2.
Typically at lest 50% of submitted proposals for grant money are funded
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement contradicts the reality of grant funding. It claims that at least 50% of submitted proposals are funded, which is not true. In reality, the competition for grant money is usually fierce, and only a small percentage of proposals receive funding. Therefore, the correct answer is false.Rate this question:
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- 3.
A typical grant provides money for a ___________ year period
- A.
Four
- B.
Three
- C.
One
- D.
Two
Correct Answer
B. ThreeExplanation
A typical grant provides money for a three-year period. This means that the grant recipient will receive funding for a duration of three years.Rate this question:
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- 4.
The primary granting agency through which the United States conducts and supports biomedical research is ______________
- A.
United States Dept. of Agriculture (USDA0
- B.
National Institutes of Aging (NIA)
- C.
National Institutes of Health (NIH)
- D.
National Science Foundation (NSF)
Correct Answer
C. National Institutes of Health (NIH)Explanation
The correct answer is National Institutes of Health (NIH). The NIH is the primary granting agency in the United States for biomedical research. It is responsible for conducting and supporting research in various areas of health and medicine. The NIH funds research projects, provides training and career development opportunities for scientists, and promotes the translation of research findings into medical advancements and public health interventions.Rate this question:
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- 5.
Research institutions provide the Public Health Service with a signed agreement that outlines how the institution complies with all aspects of humane animal care as described in the PHS Policy , This agreement is called the _____________ Assurance
- A.
Institutional compliance
- B.
Animal Welfare
- C.
Humane Care
- D.
Research Resources
Correct Answer
B. Animal WelfareExplanation
Research institutions provide the Public Health Service with a signed agreement that outlines how the institution complies with all aspects of humane animal care as described in the PHS Policy. This agreement is called the Animal Welfare Assurance.Rate this question:
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- 6.
Only animals specifically named or included the Guide are used and cared for according to the established humane principles described in the Guide
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement suggests that only animals specifically mentioned or included in the Guide are used and cared for according to humane principles. However, this is not true as the Guide is likely a set of guidelines or principles for the ethical treatment of animals, but it does not limit the application of these principles to only animals mentioned in the Guide. Animals not mentioned in the Guide can still be treated according to humane principles.Rate this question:
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- 7.
The Guide for the Care and Use of Laboratory Animals ( the Guide ) Provides Basic information on animal use and is the standard used by the Association for Assessment and Accreditation of Laboratory animal care , International (AALAC International)
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the Guide for the Care and Use of Laboratory Animals is indeed a document that provides basic information on animal use and is widely recognized as the standard by the Association for Assessment and Accreditation of Laboratory Animal Care, International (AALAC International). This guide is used by researchers, institutions, and regulatory bodies to ensure the ethical and responsible treatment of animals in laboratory settings.Rate this question:
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- 8.
Specific state regulations that concern the sale and shipment of dogs exist because of distemper vaccination requirements
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement suggests that specific state regulations exist because of distemper vaccination requirements. However, this is not true. While distemper vaccination requirements may be one factor considered in state regulations, there are likely other reasons for the existence of these regulations, such as ensuring the welfare of animals and protecting consumers from fraudulent or unethical practices.Rate this question:
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- 9.
What agency is responsible for determining whether new medical devices ( like artificial joints and cardiac pacemakers ) are safe and effective before they are approved for sale in the united states
- A.
Environmental Protection Agency
- B.
United States Department of Agriculture
- C.
Food and Drug Administration
- D.
National Institutes of Health
Correct Answer
C. Food and Drug AdministrationExplanation
The Food and Drug Administration (FDA) is responsible for determining whether new medical devices, such as artificial joints and cardiac pacemakers, are safe and effective before they are approved for sale in the United States. The FDA is the regulatory agency that oversees the safety and efficacy of drugs, medical devices, food, cosmetics, and other products. They conduct thorough evaluations and assessments to ensure that these medical devices meet the necessary standards before they can be sold in the market.Rate this question:
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- 10.
The USDA requires that common laboratory rodents be shipped with a health certificate
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the USDA does not require common laboratory rodents to be shipped with a health certificate. While there may be guidelines and regulations in place for the transportation of laboratory animals, a health certificate is not specifically required by the USDA.Rate this question:
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- 11.
States that allow the use of pound animals in research frequently have provisions which require that an impounded animal be held at a shelter for a minimum of five days to allow an owner the opportunity to reclaim a lost pet .
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
States that allow the use of pound animals in research often have provisions that require impounded animals to be held at a shelter for at least five days. This allows owners the opportunity to reclaim their lost pets.Rate this question:
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- 12.
Standard operating Procedures ( SOPs ) should only be established for direct animal care procedures
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Standard Operating Procedures (SOPs) should not only be established for direct animal care procedures. SOPs should also be established for various other aspects of animal care such as record-keeping, cleaning and sanitation, equipment maintenance, and staff training. These procedures ensure consistency, efficiency, and compliance with regulations in all aspects of animal care.Rate this question:
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- 13.
Animals may be used for research after an animal use protocol is submitted to the IACUC
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Animals may be used for research after an animal use protocol is submitted to the IACUC. This statement is false. The IACUC (Institutional Animal Care and Use Committee) is responsible for reviewing and approving animal use protocols to ensure that they meet ethical and legal standards. However, the submission of a protocol does not automatically grant permission to use animals for research. The IACUC must review and evaluate the protocol before making a decision.Rate this question:
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- 14.
If animals are to euthanized at the end of the study , the method of euthanasia must be in accordance with the guidelines ( Panel on Euthanasia ) set up by the _________
- A.
NIH
- B.
AVMA
- C.
PHS
- D.
USDA
Correct Answer
B. AVMAExplanation
The correct answer is AVMA because the AVMA (American Veterinary Medical Association) is responsible for setting guidelines on euthanasia methods for animals. They provide guidance on the most humane and ethical ways to euthanize animals, ensuring that the process is carried out in a compassionate and respectful manner. The NIH (National Institutes of Health), PHS (Public Health Service), and USDA (United States Department of Agriculture) may have their own regulations and guidelines for animal research, but they are not specifically focused on euthanasia methods.Rate this question:
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- 15.
Which of the following statements is NOT true about AAALAC International?
- A.
It provides a mechanism for peer evaluation of animal care and use programs
- B.
It requires annual reports from its accredited facilities
- C.
It conducts site visits every 3 years
- D.
It is a government - sponsored agency
Correct Answer
D. It is a government - sponsored agencyExplanation
AAALAC International is not a government-sponsored agency. It is an independent, nonprofit organization that provides a mechanism for peer evaluation of animal care and use programs. It requires annual reports from its accredited facilities and conducts site visits every three years to ensure compliance with its standards.Rate this question:
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- 16.
How long are assurance records related to grant applications to be maintained ?
- A.
For the duration of the experiment
- B.
For the term of the grant
- C.
At least 3 years , following completion of the activity
- D.
One year
Correct Answer
C. At least 3 years , following completion of the activityExplanation
Assurance records related to grant applications are required to be maintained for at least 3 years following the completion of the activity. This means that after the experiment or project funded by the grant is finished, the assurance records must be retained for an additional 3 years. This is important for accountability and transparency purposes, as it allows for future reference and verification of the grant application process.Rate this question:
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- 17.
What information do animal facility records provide ?
- A.
They reflect whether environmental controls were properly maintained
- B.
They are necessary so that experiments can be repeated under exactly the same conditions
- C.
They reflect whether an experiment was successful or not
- D.
All of the above
Correct Answer
A. They reflect whether environmental controls were properly maintainedExplanation
Animal facility records provide information on whether environmental controls were properly maintained. This information is crucial for ensuring the well-being and safety of the animals in the facility. It helps to monitor and maintain the appropriate temperature, humidity, lighting, and ventilation levels, which are essential for the health and welfare of the animals. Additionally, these records also help in complying with regulatory guidelines and standards. The other options mentioned in the question, such as the ability to repeat experiments under the same conditions and determining the success of an experiment, are not directly related to animal facility records.Rate this question:
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- 18.
Why are perdiem rates different between institutions
- A.
Pharmaceutical facilities cannot be compared to university researh facilities
- B.
Some institutions include costs that others do not include
- C.
Some institutions set higher standards for animal care which can add to the cost
- D.
All of the above
Correct Answer
B. Some institutions include costs that others do not includeExplanation
The per diem rates are different between institutions because some institutions include costs that others do not include. This means that certain institutions may have additional expenses that they factor into their per diem rates, while others may not have those same costs. This difference in included costs leads to variations in the per diem rates among different institutions.Rate this question:
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- 19.
How can you become more productive on the job and make better use of your time ?
- A.
Time Management
- B.
Delegation
- C.
Cost accounting
- D.
Accurate record keeping
Correct Answer
A. Time ManagementExplanation
Time management is the correct answer because it refers to the practice of organizing and planning one's time effectively in order to be more productive and make better use of time. By setting goals, prioritizing tasks, and scheduling activities, individuals can allocate their time efficiently and avoid wasting time on unimportant or non-essential activities. This allows individuals to focus on important tasks, meet deadlines, and achieve better results in their work. Time management helps individuals to be more productive, reduce stress, and achieve a better work-life balance.Rate this question:
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- 20.
When would you plan to work on a large assignment if you are a fast - paced morning person ?
- A.
The first part of the day
- B.
Delegation
- C.
Cost Accounting
- D.
Accurate record keeping
Correct Answer
A. The first part of the dayExplanation
If someone is a fast-paced morning person, it means they are most productive and focused during the early hours of the day. Therefore, it would be logical for them to plan to work on a large assignment during the first part of the day when they have the most energy and concentration. This would allow them to make the most progress and complete the assignment efficiently.Rate this question:
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- 21.
What should you do when a task is delegated to you?
- A.
Make sure you completely understand the instructions
- B.
Document it for your performance review
- C.
Make sure the work assignments are evenly distributed
- D.
Find out if the assignment is in your job description
Correct Answer
A. Make sure you completely understand the instructionsExplanation
When a task is delegated to you, it is important to make sure you completely understand the instructions. This ensures that you have a clear understanding of what needs to be done and how to do it. By fully understanding the instructions, you can avoid any confusion or mistakes that may arise from misinterpretation. This also allows you to ask any necessary questions or seek clarification if needed. Understanding the instructions is crucial for successfully completing the delegated task and meeting expectations.Rate this question:
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- 22.
What should you do after you delegate a task to someone else?
- A.
Observe the person when they are doing the task
- B.
Check the room log to see if they marked the tasks completed
- C.
Follow up to be sure it has been completed
- D.
Leave the person alone and assume they know what they are doing
Correct Answer
C. Follow up to be sure it has been completedExplanation
After delegating a task to someone else, it is important to follow up to ensure that it has been completed. This is necessary to ensure that the task was understood correctly, to address any questions or concerns that may have arisen during the process, and to provide any necessary feedback or guidance. Simply assuming that the person knows what they are doing and leaving them alone may lead to misunderstandings or incomplete work. Checking the room log may provide some information, but it is still important to directly communicate and follow up with the person to ensure the task's completion.Rate this question:
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- 23.
What additional knowledge is required to assist in hematology
- A.
Certification as a veterinary technician
- B.
A background in clinical diagnostics
- C.
An understanding of blood cell morphology
- D.
A bachelors degree in biology
Correct Answer
C. An understanding of blood cell morphologyExplanation
To assist in hematology, having an understanding of blood cell morphology is crucial. This knowledge allows for the identification and interpretation of different types of blood cells, which is essential in diagnosing and monitoring various blood disorders and diseases. It enables the technician to recognize abnormalities in cell shape, size, and structure, which can provide valuable diagnostic information. Without this understanding, it would be challenging to accurately analyze blood samples and provide appropriate treatment recommendations.Rate this question:
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- 24.
The gauge of the needle refers to the
- A.
Circumference
- B.
Route of injection
- C.
Diameter
- D.
Length
Correct Answer
C. DiameterExplanation
The gauge of the needle refers to its diameter. The diameter of the needle is an important factor in determining the size of the needle and its suitability for a specific injection. A smaller gauge needle has a smaller diameter, while a larger gauge needle has a larger diameter. The gauge of the needle affects the flow rate of the injected substance and the level of discomfort experienced by the patient during the injection. Therefore, understanding the gauge of the needle is crucial for healthcare professionals to ensure safe and effective injections.Rate this question:
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- 25.
Which lists routes of injections from fastest absorption to slowest?
- A.
IV,IP, IM, SC. IP
- B.
IM, SC. ID, IV,IP
- C.
IP, IM, SC, ID, IV,
- D.
SC, ID, IV, IP, IM
Correct Answer
A. IV,IP, IM, SC. IPExplanation
The correct answer is IV, IP, IM, SC. IP. This is because intravenous (IV) injections have the fastest absorption rate as the medication is directly injected into the bloodstream. Intraperitoneal (IP) injections have a slightly slower absorption rate as the medication is injected into the peritoneal cavity. Intramuscular (IM) injections have a slower absorption rate as the medication is injected into the muscle tissue. Subcutaneous (SC) injections have an even slower absorption rate as the medication is injected into the fatty tissue layer beneath the skin. Finally, the second IP in the answer options is likely a typo or error.Rate this question:
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- 26.
What helps to prevent cells lysis during blood collection?
- A.
A needle coated with anticoagulant
- B.
A large size syringe
- C.
A steady hand
- D.
A large size needle
Correct Answer
D. A large size needleExplanation
A large size needle helps to prevent cell lysis during blood collection because it allows for a faster and smoother flow of blood, reducing the chances of cells being damaged or ruptured. A smaller needle may cause more resistance and turbulence, leading to cell lysis. Additionally, a larger needle can also help ensure that an adequate amount of blood is collected without the need for excessive force or multiple attempts, further minimizing the risk of cell damage.Rate this question:
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- 27.
What quadrant is an IP injection given in ?
- A.
Lower right
- B.
Lower left
- C.
Upper left
- D.
Upper right
Correct Answer
A. Lower rightExplanation
An IP injection is given in the lower right quadrant. This means that the injection is administered in the lower right area of the body.Rate this question:
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- 28.
Up to 0.5 mls of fluid can be injected into an intradermal site
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the correct amount of fluid that can be injected into an intradermal site is up to 0.1 ml, not 0.5 ml.Rate this question:
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- 29.
The most desirable site for an IM injection is _____________
- A.
A large muscle mass
- B.
The back muscles
- C.
The forelimb
- D.
The hind limb
Correct Answer
A. A large muscle massExplanation
The most desirable site for an IM injection is a large muscle mass because it allows for better absorption and distribution of the medication. Large muscle masses have a greater blood supply, which helps in the faster and more efficient delivery of the injected medication into the bloodstream. Additionally, injecting into a large muscle mass reduces the risk of hitting nerves or blood vessels, minimizing the chances of complications.Rate this question:
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- 30.
what site can multiple blood samples be obtained from rodents in a 24 hour period
- A.
Tail Vein
- B.
Saphenous Vein
- C.
Ear
- D.
Heart
Correct Answer
B. Saphenous VeinExplanation
The correct answer is the Saphenous Vein. The Saphenous Vein is a commonly used site for obtaining multiple blood samples from rodents in a 24-hour period. It is easily accessible and provides a sufficient amount of blood for analysis. Other sites such as the Tail Vein, Ear, and Heart may also be used for blood collection, but they may not be as suitable for multiple samples within a short period of time.Rate this question:
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- 31.
Which is a key difference between IV injection and blood withdrawal?
- A.
Pressure is maintained on the vein proximal to the injection site
- B.
A syringe cannot be used for blood withdrawal
- C.
Pressure does not need to be applied to the site after blood withdrawal
- D.
Only concave needles can be used for IV injections
Correct Answer
A. Pressure is maintained on the vein proximal to the injection siteExplanation
The key difference between IV injection and blood withdrawal is that pressure is maintained on the vein proximal to the injection site during IV injection, whereas pressure does not need to be applied to the site after blood withdrawal. This means that during IV injection, pressure is applied to prevent blood from flowing back into the vein, while during blood withdrawal, pressure is not necessary as the goal is to remove blood from the vein.Rate this question:
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- 32.
In what type of procedure is cardiac puncture mostly used ?
- A.
Bypass surgery
- B.
Non- survival
- C.
Biopsy
- D.
Survival
Correct Answer
B. Non- survivalExplanation
Cardiac puncture is mostly used in non-survival procedures. This means that the procedure is performed on an animal that is not expected to survive. In non-survival procedures, the animal is euthanized or sacrificed after the procedure is completed. Cardiac puncture involves inserting a needle into the heart to collect blood or administer substances directly into the bloodstream. This procedure is commonly used for research purposes, such as collecting blood samples for analysis or administering drugs in animal studies.Rate this question:
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- 33.
If blood samples are beign collected at frequent intervals , the guideline often used to insure the health of the animal is that the volume of blood equal to 1% of the animal's weight can be taken every two weeks
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The guideline states that the volume of blood equal to 1% of the animal's weight can be taken every two weeks to ensure the health of the animal. This means that frequent blood samples can be collected without causing harm or stress to the animal. Therefore, the statement is true.Rate this question:
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- 34.
What is the approximate blood volume of an animal ?
- A.
6% of body weight
- B.
3% of body volume
- C.
3% of body weight
- D.
1% of body weight
Correct Answer
A. 6% of body weightExplanation
The approximate blood volume of an animal is typically around 6% of its body weight. This means that for every kilogram of body weight, the animal will have approximately 60 milliliters of blood. This is an important measurement as it helps in understanding the circulatory system and the amount of blood needed to supply oxygen and nutrients to the body's tissues.Rate this question:
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- 35.
What is the term for placement of a liquid into the stomach by using a tube attached to a syringe?
- A.
Esophageal dosing
- B.
Bolusing
- C.
Gavage
- D.
Intubation
Correct Answer
C. GavageExplanation
Gavage is the term used for the placement of a liquid into the stomach using a tube attached to a syringe. This method is commonly used in medical procedures to administer medication or nutrients directly into the stomach when oral intake is not possible. Esophageal dosing refers to the administration of medication into the esophagus, bolusing refers to the administration of a large amount of fluid quickly, and intubation refers to the insertion of a tube into a body cavity.Rate this question:
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- 36.
How do you determine how far to insert a gavage needle ?
- A.
Stop insertion when you feel resistance
- B.
Insert it all the way each time
- C.
Measure the length from the mouth to the end of the throat
- D.
Line up the ball at the level of the last rib
Correct Answer
D. Line up the ball at the level of the last ribExplanation
To determine how far to insert a gavage needle, one should line up the ball at the level of the last rib. This means that the needle should be inserted until the ball reaches the level of the last rib. This method ensures that the needle is inserted to the correct depth and prevents it from being inserted too far or not far enough. By using the last rib as a reference point, the correct placement of the needle can be achieved consistently.Rate this question:
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- 37.
How is a gag used in oral dosing of large animals ?
- A.
Secure the gag after dosing to prevent the animal from regurgitating
- B.
Secure the animal's mouth around the gag and pass the tube through it
- C.
The gag is used to prevent the animal from sudden head movement
- D.
The gag stimulates the animal's swallow reflex
Correct Answer
B. Secure the animal's mouth around the gag and pass the tube through itExplanation
The correct answer is to secure the animal's mouth around the gag and pass the tube through it. This method is used in oral dosing of large animals to ensure that the medication or substance being administered is properly delivered into the animal's digestive system. By securing the animal's mouth around the gag, it prevents the animal from biting or chewing on the tube, and passing the tube through the gag allows for easy and controlled administration of the dose.Rate this question:
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- 38.
What is a unit of hereditary characteristics?
- A.
Chromosome
- B.
Allele
- C.
Gene
- D.
DNA
Correct Answer
C. GeneExplanation
A gene is a unit of hereditary characteristics. Genes are segments of DNA that contain the instructions for building proteins, which are responsible for the traits and functions of living organisms. Genes are passed down from parents to offspring and determine various physical and behavioral traits. Chromosomes are structures that contain genes, but they are not the unit of hereditary characteristics themselves. Alleles are alternative forms of a gene, and DNA is the molecule that carries genetic information, but neither of them is the unit of hereditary characteristics.Rate this question:
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- 39.
Which of the following represent dominant alleles?
- A.
Single digit numerals
- B.
Italics
- C.
Lower case letters
- D.
Capital letters
Correct Answer
D. Capital lettersExplanation
Dominant alleles are the alleles that are expressed in the phenotype when present in either one or two copies. In this context, capital letters represent dominant alleles because they are typically used to denote dominant traits in genetics. Capital letters are commonly used to represent the dominant form of a gene, while lowercase letters are used for the recessive form. Therefore, capital letters are the correct answer as they represent dominant alleles.Rate this question:
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- 40.
When does a recessive gene usually express?
- A.
When only one chromosome is present
- B.
When 2 recessive alleles are present
- C.
When there is 1 recessive and 1 dominant allele
- D.
When the 2 alleles are the same
Correct Answer
B. When 2 recessive alleles are presentExplanation
A recessive gene usually expresses when 2 recessive alleles are present. This means that both copies of the gene are recessive, and there are no dominant alleles present to mask the expression of the recessive trait. In this case, the recessive trait will be visible or expressed in the individual's phenotype.Rate this question:
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- 41.
The observable or discernible characteristics of an animal are known as the ______________ ?
- A.
Genotype
- B.
Taxonomic profile
- C.
Phylum
- D.
Phenotype
Correct Answer
D. PhenotypeExplanation
The observable or discernible characteristics of an animal are known as the phenotype. This includes physical traits such as color, size, and shape, as well as behavioral traits. The phenotype is influenced by the animal's genotype, which is its genetic makeup, but it can also be influenced by environmental factors. The taxonomic profile refers to the classification of an animal into a specific taxonomic group, such as a species or a genus. The phylum is a higher taxonomic rank that groups animals based on certain shared characteristics.Rate this question:
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- 42.
Which part of the mouse model BALB/c StCrl p GF (F83) is the strain symbol ?
- A.
StCrl
- B.
(F83)
- C.
GF
- D.
BALB
Correct Answer
D. BALBExplanation
The strain symbol in the mouse model BALB/c StCrl p GF (F83) is BALB.Rate this question:
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- 43.
What does " +" represent as a gene symbol ?
- A.
The dominant allele
- B.
The normal or wild type
- C.
The unknown allele
- D.
The mutant type
Correct Answer
B. The normal or wild typeExplanation
The gene symbol "+" represents the normal or wild type allele. This means that it is the most common or typical form of the gene found in a population. It is considered the standard or reference allele against which other alleles are compared.Rate this question:
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- 44.
What is the difference between genotype and phenotype ?
- A.
Genotype is the wild type and phenotype is the mutant forms
- B.
They are the same
- C.
Genotype is what the genes are , phenotype is what genes are expressed
- D.
Phenotype is what the genes are , genotype is what genes are expressed
Correct Answer
C. Genotype is what the genes are , phenotype is what genes are expressedExplanation
The correct answer explains that genotype refers to the genetic makeup or composition of an organism, while phenotype refers to the observable characteristics or traits that are expressed as a result of the genes. In other words, genotype represents the genes that an organism possesses, while phenotype represents how those genes are expressed and manifest in the organism's physical appearance or behavior.Rate this question:
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- 45.
What color is a mouse with the genotype B/b
- A.
Black
- B.
Agouti
- C.
Brown
- D.
Brindle
Correct Answer
A. BlackExplanation
The genotype B/b indicates that the mouse has one dominant allele (B) for black fur color and one recessive allele (b) for brown fur color. Since black is dominant over brown, the mouse will have black fur.Rate this question:
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- 46.
What is the term used when more than one dominant allele affects a trait?
- A.
Complex dominance
- B.
Incomplete dominance
- C.
Shared dominance
- D.
Split dominance
Correct Answer
B. Incomplete dominanceExplanation
Incomplete dominance is the correct answer because it refers to a situation where neither of the two alleles is completely dominant over the other, resulting in a blending or intermediate phenotype. In this case, both alleles contribute to the phenotype, leading to a unique expression of the trait that is different from the dominant-recessive pattern. Complex dominance, shared dominance, and split dominance are not valid terms used to describe this phenomenon.Rate this question:
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- 47.
What is the name of a cell produced at fertilization by the union of sperm and egg?
- A.
Gamete
- B.
Zygote
- C.
Fetus
- D.
Oocyte
Correct Answer
B. ZygoteExplanation
A zygote is the cell that is formed when a sperm fertilizes an egg during the process of fertilization. It is the earliest stage of development and contains the complete set of genetic material from both the sperm and the egg. The zygote will then undergo cell division and development to eventually form an embryo. Gametes are the reproductive cells (sperm and egg) that unite during fertilization, but the zygote is the specific cell that is formed as a result of this union. Fetus refers to the later stages of development in the womb, and oocyte is an immature egg cell.Rate this question:
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- 48.
Ferrets, cats, and rabbits are the common laboratory species which are induced ovulators
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Ferrets, cats, and rabbits are indeed common laboratory species that exhibit induced ovulation. This means that these animals release an egg from their ovaries in response to mating or other external stimuli. Unlike humans and some other animals, they do not have a regular menstrual cycle and only ovulate when stimulated. This characteristic makes them suitable for certain types of research studies in the laboratory setting.Rate this question:
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- 49.
Of the four stages of estrus , which is defined as that where follicle development takes place?
- A.
Anestrus
- B.
Metestrus
- C.
Estrus
- D.
Proestrus
Correct Answer
D. ProestrusExplanation
Proestrus is the stage of estrus in which follicle development takes place. During this stage, the follicles in the ovaries start to grow and develop, preparing for ovulation. The hormone estrogen is also released during proestrus, which leads to the thickening of the uterine lining. This stage is characterized by behavioral changes, such as increased flirtation and receptivity to mating.Rate this question:
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- 50.
For the purpose of artificial insemination, collection of sperm form small rodents is performed by extraction directly from the testes / epididymis following euthanasia
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because for artificial insemination, the collection of sperm from small rodents is indeed performed by extracting it directly from the testes or epididymis after the animal has been euthanized. This method ensures that the highest quality and most viable sperm is obtained for the insemination process.Rate this question:
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Current Version
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Oct 13, 2023Quiz Edited by
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Mar 02, 2009Quiz Created by
Bionetics
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