Applied Genetics Practice Exam

19 Questions | Total Attempts: 1611

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Applied Genetics Practice Exam - Quiz

In the following practice exam on applied genetics, we aim to put you to the test against a series of questions related to the biological study which allows us to analyze our genetic patterns and see if we are more or less likely to develop a life-threatening illness as a result of it being transferred to us via our parents. What do you know about genetics? Let’s take a look!


Questions and Answers
  • 1. 
    A change in a gene is called
    • A. 

      Genetic engineering

    • B. 

      A mutation

    • C. 

      A gene

    • D. 

      A pedigree

  • 2. 
    A chart that traces an inherited trait through several generations is called a
    • A. 

      Pedigree

    • B. 

      Karyotype

    • C. 

      Family tree

    • D. 

      Gene chart

  • 3. 
    In chinchillas, grey fur (G) is dominat over white fur (g). What is the percentage of offspring that will have grey fur if a heterozygous dominant chinchilla is crossed with a homozygous dominant chinchilla?
    • A. 

      0%

    • B. 

      50%

    • C. 

      75%

    • D. 

      100%

  • 4. 
    The above image shows a picture of what process?
    • A. 

      Bacterial conjugation

    • B. 

      Genetic engineering

    • C. 

      Recombinant DNA

    • D. 

      Gel electrophoresis

  • 5. 
                                             "What is on the horizon for GMO's?"        Combining genes from different organisms is known as recombinant DNA technology, and the resulting organism is said to be "genetically modified," "genetically engineered," or "transgenic." GM products (current or those in development) include medicines and vaccines, foods and food ingredients, feeds, and fibers. Locating genes for important traits—such as those conferring insect resistance or desired nutrients—is one of the most limiting steps in the process. However, genome sequencing and discovery programs for hundreds of organisms are generating detailed maps along with data-analyzing technologies to understand and use them. In 2006, 252 million acres of transgenic crops were planted in 22 countries by 10.3 million farmers. The majority of these crops were herbicide- and insect-resistant soybeans, corn, cotton, canola, and alfalfa. Other crops grown commercially or field-tested are a sweet potato resistant to a virus that could decimate most of the African harvest, rice with increased iron and vitamins that may alleviate chronic malnutrition in Asian countries, and a variety of plants able to survive weather extremes. On the horizon are bananas that produce human vaccines against infectious diseases such as hepatitis B; fish that mature more quickly; cows that are resistant to bovine spongiform encephalopathy (mad cow disease); fruit and nut trees that yield years earlier, and plants that produce new plastics with unique properties. In 2006, countries that grew 97% of the global transgenic crops were the United States (53%), Argentina (17%), Brazil (11%), Canada (6%), India (4%), China (3%), Paraguay (2%) and South Africa (1%). Although growth is expected to plateau in industrialized nations, it is increasing in developing countries. The next decade will see exponential progress in GM product development as researchers gain increasing and unprecedented access to genomic resources that are applicable to organisms beyond the scope of individual projects. Technologies for genetically modifying foods offer dramatic promise for meeting some of the 21st Century's greatest challenges. Like all new technologies, they also pose some risks, both known and unknown. Controversies surrounding GM foods and crops commonly focus on human and environmental safety, labeling and consumer choice, intellectual property rights, ethics, food security, poverty reduction, and environmental conservation (see GM Products: Benefits and Controversies, below).Based on the information in the article, the following statement could be concluded                         
    • A. 

      Genetically modified food can provide a great deal of scientific and agricultural advancements that would benefit countries

    • B. 

      Many other countries will now test and use genetically modified crops to provide food for their people.

    • C. 

      Genetic engineering is a difficult process and can be very expensive.

    • D. 

      Genetic engineering can be used to cure "mad cow" disease.

  • 6. 
    A baby was found abandoned on the steps of the local hospital. Items that were located in the baby's carseat led to the identification of five individuals who were potential relatives of the child. Police took samples from the child (sample A) and five women who could be the child's mother (samples B-F). Based on the picture, which sample is most likely the mother of the child?
    • A. 

      Sample B

    • B. 

      Sample C

    • C. 

      Sample D

    • D. 

      Sample E

    • E. 

      Sample F

  • 7. 
    Which of these is not a benefit of genetically modified organisms?
    • A. 

      They increase the food supply

    • B. 

      They help with scientific research of valuable proteins

    • C. 

      They produce plants that contain their own herbicides and pesticides

    • D. 

      They increase the risk of allergies in children

  • 8. 
    The chart above tells you that the disorder being traced is a
    • A. 

      Dominant disorder

    • B. 

      Recessive disorder

    • C. 

      Autosomal disorder

    • D. 

      None of the above

  • 9. 
      Male pattern baldness is a sex-linked trait. That means that it is most commonly passed from
    • A. 

      Father to son

    • B. 

      Mother to son

    • C. 

      Father to daughter

    • D. 

      Mother to daughter

  • 10. 
    Genetic disorders are commonly inherited and are transferred from one generation to the next. However, it is possible to get a genetic disorder without it "running in the family". How does this occur?
    • A. 

      A mutation in a gene causes the appearance of a disorder.

    • B. 

      Genes are transferred from one individual to another through genetic engineering

    • C. 

      Cloning

    • D. 

      Genetic disorders can only be only be inherited

  • 11. 
    Having more or less than the average number of chromosomes can result in
    • A. 

      Fraternal twins

    • B. 

      Identical twins

    • C. 

      Cloned cells

    • D. 

      Genetic disorders

  • 12. 
    Below is a pedigree for albinism. Based on the information, what type of trait is albinism?
    • A. 

      Autosomal and recessive

    • B. 

      Autosomal and dominant

    • C. 

      Sex-linked and recessive

    • D. 

      Sex-linked and dominant

  • 13. 
    Which of the following would be the best  reason for creating genetically modified animals
    • A. 

      Scientists would be able to control the inheritance of desirable traits while "weeding out" traits that were undesirable

    • B. 

      Genetically modified animals created in large numbers lower the cost of food and are more healthy

    • C. 

      Genetically modified animals can be created much quicker in a lab than in nature

    • D. 

      Genetically modified animals can create anti-biotic resistant strains of bacteria

  • 14. 
    The above pedigree is for albinism. Reading from your left to your right in the second row (first generation offspring), what is the genotype of the second sibling (daughter)?
    • A. 

      AA

    • B. 

      Aa

    • C. 

      Albino

    • D. 

      Unaffected

  • 15. 
    A farmer grows a mutant form of corn on three of six fields on his farm. On the other three fields, he grows organic corn for the farmer's market. What is one possible disadvantage he will face in this process (the best possible answer)?
    • A. 

      Increase possibility of allergies

    • B. 

      Increase in profit because he is producing twice the amount of corn

    • C. 

      Herbicide resistant corn

    • D. 

      The possibility of cross-pollination destroying both crops

  • 16. 
    Cloning involves taking a cell from one organism, fusing it with the cell of another organism and then implanting it into the uterus of a "foster mother". The offspring is then genetically identical to the parent cell. In what other situation does this occur?
    • A. 

      Meiosis

    • B. 

      Mitosis

    • C. 

      Identical twins

    • D. 

      Fraternal twins

  • 17. 
    Hemophilia is a sex-linked genetic disorder. Which statement best describes its inheritance pattern?
    • A. 

      It is recessive in both males and females

    • B. 

      It is recessive in males but dominant in females

    • C. 

      It is recessive in females but dominant in males

    • D. 

      It is dominant in both males and females

  • 18. 
    In a pedigree, a half shaded individual represents a
    • A. 

      Recessive trait

    • B. 

      Dominant trait

    • C. 

      Carrier

    • D. 

      Unaffected individual

  • 19. 
    Which of these statements is least likely to cause concern about genetically modified organisms?
    • A. 

      Genetically modified organisms are responsible for an increase in allergies in young children

    • B. 

      Genetically modified organisms will create resistant strains of bacteria that will be hard to control or get rid of.

    • C. 

      Genetically modified organisms can be used to create substances that are harmful to humans and other organisms

    • D. 

      Genetically modified organisms will create mutated genetic traits in the human population

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