Ch. 11 Inheriting Genes
Ch 11 Review for 2nd test
Questions and Answers
- 1.
The"father of genetics" is?
- A.
Tom Leykis
- B.
Gregory Mendel
- C.
George Bush
- D.
Aristotle
Correct Answer
B. Gregory MendelExplanation
Gregory Mendel is known as the "father of genetics" because of his groundbreaking work on the inheritance of traits in pea plants. Through his experiments, Mendel discovered the principles of inheritance, including the concepts of dominant and recessive traits, as well as the laws of segregation and independent assortment. His work laid the foundation for modern genetics and revolutionized our understanding of how traits are passed down from generation to generation.Rate this question:
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- 2.
Before Mendel's experiment, most people believed the " ___________ Hypothesis
- A.
Blending
- B.
Lady Gaga
- C.
XXY
Correct Answer
A. BlendingExplanation
Before Mendel's experiment, most people believed in the "Blending" hypothesis. This hypothesis suggested that the traits of offspring were a blend or mixture of the traits of their parents. However, Mendel's experiments with pea plants disproved this hypothesis and instead supported the concept of discrete hereditary units, which later became known as genes. Mendel's work laid the foundation for the field of genetics and our understanding of inheritance patterns.Rate this question:
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- 3.
Gregor Mendel manipulated the pollination of the flowers by removing the __________.
- A.
Stem
- B.
Stamen
- C.
Leaves
- D.
Bubble gum
Correct Answer
B. StamenExplanation
Gregor Mendel manipulated the pollination of the flowers by removing the stamen. The stamen is the male reproductive organ of a flower, consisting of the filament and anther. By removing the stamen, Mendel ensured that the flower could not self-pollinate or be pollinated by other flowers, allowing him to control the pollination process and study the inheritance of traits more accurately.Rate this question:
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- 4.
A _______ is a unit of information about a specific trait.Clue: Four letter word that starts with the letter G
Correct Answer
gene
genesExplanation
A gene is a unit of information about a specific trait. Genes are segments of DNA that contain the instructions for building and maintaining the structures and functions of living organisms. They determine the characteristics and traits that an organism will inherit from its parents. Genes are responsible for traits such as eye color, hair color, and height. They play a crucial role in the development and functioning of an organism.Rate this question:
- 5.
Each gene has a specific location on the chromosome. This is called a _________.
- A.
Nucluei
- B.
Loci/Locus
- C.
Germ
Correct Answer
B. Loci/LocusExplanation
Each gene has a specific location on the chromosome, which is referred to as a locus or loci. A locus is a specific position on a chromosome where a gene is located. It is used to identify and map genes within a genome.Rate this question:
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- 6.
Alleles are different __________ forms of a gene.
- A.
Receptive
- B.
Electronical
- C.
Molecular
- D.
None of the above
Correct Answer
C. MolecularExplanation
Alleles are different molecular forms of a gene. This means that alleles are variations of a gene that occur at the molecular level, such as differences in DNA sequence. These molecular differences in alleles can result in different traits or characteristics being expressed in an organism. Therefore, the correct answer is "molecular".Rate this question:
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- 7.
We each have __ alleles: 1 from our mother; 1 from our father
Correct Answer
2
twoExplanation
Each individual inherits one allele from their mother and one allele from their father, resulting in a total of two alleles. This is a fundamental concept in genetics, known as Mendelian inheritance. Therefore, the correct answer is 2 or two.Rate this question:
- 8.
There are two types of Alleles:
Correct Answer
dominant and recessive
recessive and dominant
dominant gene and recessive gene
recessive gene and dominant geneExplanation
The correct answer is dominant and recessive, recessive and dominant, dominant gene and recessive gene, recessive gene and dominant gene. This is because alleles are alternative forms of a gene that occupy the same position on a chromosome. Dominant alleles are expressed when present, while recessive alleles are only expressed when there are no dominant alleles present. The terms "dominant" and "recessive" refer to the expression of the allele, while "gene" refers to the specific segment of DNA that carries the allele.Rate this question:
- 9.
This is an example of a?
- A.
A pickled egg
- B.
A monohybrid Punnet Square
- C.
A Dihybrid grid
Correct Answer
B. A monohybrid Punnet SquareExplanation
A monohybrid Punnet Square is the correct answer because it is a type of Punnet Square that is used to predict the outcomes of a cross between two individuals that differ in only one trait. In this case, the question is asking for an example, and a monohybrid Punnet Square fits the description as it is a specific type of Punnet Square used for predicting the inheritance of a single trait.Rate this question:
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- 10.
Genotype refers to the
- A.
Expressed traits.
- B.
Genes carried on the chromosome.
Correct Answer
B. Genes carried on the chromosome.Explanation
Genotype refers to the genes carried on the chromosome. It is the genetic makeup of an individual, representing the specific combination of alleles for each gene. These genes are responsible for determining the traits and characteristics that an individual will have. The genotype may or may not be expressed in the phenotype, which refers to the observable traits of an individual. Therefore, the correct answer is genes carried on the chromosome.Rate this question:
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- 11.
Phenotype refers to the
- A.
Expressed traits.
- B.
Genes carried on the chromosome.
Correct Answer
A. Expressed traits.Explanation
Phenotype refers to the expressed traits of an organism, which are the observable characteristics that are determined by the interaction between genes and the environment. These traits can include physical features, such as eye color or height, as well as behavioral or physiological characteristics. The genotype, on the other hand, refers to the specific genes carried on the chromosome. While the genotype provides the genetic information, it is the phenotype that actually manifests and can be observed or measured. Therefore, the correct answer is "expressed traits."Rate this question:
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- 12.
1. How many offspring will have GG genotype: Gg genotype: gg genotype:2. What is the phenotype ratio for this Punnet square:
- 13.
Select the appropriate theory for this statement.During gamete formation, the Alleles segregate from each other. (crossing over)
- A.
Mendel's theory of Independent Assortment
- B.
Mendel's Theory of Segregation
- C.
Mendel's theory of Dependent Assortment
Correct Answer
B. Mendel's Theory of SegregationExplanation
Mendel's Theory of Segregation states that during gamete formation, the alleles segregate from each other. This means that the two alleles for a trait separate during the formation of gametes, with each gamete receiving only one allele. This process ensures that each offspring receives one allele from each parent, leading to the inheritance of traits in a predictable manner. This theory explains the phenomenon mentioned in the statement, making it the appropriate theory to select.Rate this question:
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- 14.
Interaction between products of gene pairs , such as mammalian hair color describes what process?
Correct Answer
EpistasisExplanation
Epistasis refers to the interaction between products of gene pairs, where one gene masks or modifies the effect of another gene. In the case of mammalian hair color, different genes may interact to determine the final hair color outcome. This means that the expression of one gene can influence or override the expression of another gene, leading to variations in hair color. Therefore, the correct answer is Epistasis.Rate this question:
- 15.
Select the correct theory for this statementMembers of each pair of homologous chromosomes are sorted into gametes at random during meiosis.
- A.
Dependent Assortment
- B.
Independent Assortment
Correct Answer
B. Independent AssortmentExplanation
During meiosis, the process of independent assortment occurs, where homologous chromosomes separate randomly into different gametes. This means that the sorting of chromosomes into gametes is not dependent on each other, but rather happens independently. This process leads to genetic variation as different combinations of chromosomes are formed in the gametes. Therefore, the correct theory for the given statement is Independent Assortment.Rate this question:
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