Question 1

The product rule is used to determine the probability that two parents with a Bb genotype will have a child who also has the Bb genotype. 
__________________

Accepted Answer

A) True 
 B)False

Question 2

In genetics, map units express the distance between:

Accepted Answer

A)  chromosomes during metaphase. 
B)  two loci on a chromosome. 
C)  alleles. 
D)  polar bodies. 
E)  homologous chromosomes. 
A)  chromosomes during metaphase. 
B)  two loci on a chromosome. 
C)  alleles. 
D)  polar bodies. 
E)  homologous chromosomes.

Question 3

The chromosome theory of inheritance, developed by Sutton and Boveri, provided an explanation for Mendel's principle of segregation by proposing that:

Accepted Answer

A)  sister chromatids separate during mitosis. 
B)  all genes are linked on a single chromosome. 
C)  linked genes are inherited together. 
D)  homologous chromosomes segregate during meiosis. 
E)  homologous chromosomes segregate during mitosis. 
A)  sister chromatids separate during mitosis. 
B)  all genes are linked on a single chromosome. 
C)  linked genes are inherited together. 
D)  homologous chromosomes segregate during meiosis. 
E)  homologous chromosomes segregate during mitosis.

Question 4

Suppose that the allele for brown eyes (B) is dominant to the allele for hazel eyes (b). If both parents have brown eyes and are heterozygous (Bb), what are the chances that their first child will have hazel eyes? Brown eyes? What are the chances that if they have two children, both will have hazel eyes?

Accepted Answer

Concepts to Consider: The prob

Question 5

In a Punnett square, the alleles available for inheritance from one parent are listed across the top and those from the other parent are listed across the left side. 
__________________

Accepted Answer

A) True 
 B)False

Question 6

The theory of blending inheritance was shown to be false by Mendel's observations of dominant and recessive alleles. 
__________________

Accepted Answer

A) True 
 B)False

Question 7

In humans, assume that the allele for brown eyes is dominant and the allele for blue eyes is recessive. If two brown-eyed individuals have a child with blue eyes, that means:

Accepted Answer

A)  both parents are homozygous for brown eyes. 
B)  both parents are heterozygous for eye color. 
C)  there is a 1/4 chance that their second child will have brown eyes. 
D)  there is a 1/2 chance that their second child will have blue eyes. 
E)  there is a 3/4 chance that their second child will have blue eyes 
A)  both parents are homozygous for brown eyes. 
B)  both parents are heterozygous for eye color. 
C)  there is a 1/4 chance that their second child will have brown eyes. 
D)  there is a 1/2 chance that their second child will have blue eyes. 
E)  there is a 3/4 chance that their second child will have blue eyes

Question 8

In rabbits, coat color is governed by four alleles: C for dark gray, Cch for chinchilla, Ch for himalayan, and c for white. Each individual rabbit inherits a combined total of _____ coat color allele(s) from its parents.

Accepted Answer

A)  zero 
B)  one 
C)  two 
D)  three 
E)  four 
A)  zero 
B)  one 
C)  two 
D)  three 
E)  four

Question 9

The sex of a human is determined by the:

Accepted Answer

A)  number of chromosomes. 
B)  number of autosomes. 
C)  presence of only one X chromosome. 
D)  number of sex chromosomes. 
E)  presence of a Y chromosome. 
A)  number of chromosomes. 
B)  number of autosomes. 
C)  presence of only one X chromosome. 
D)  number of sex chromosomes. 
E)  presence of a Y chromosome.

Question 10

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb). If there are 800 F1 progeny, the expected phenotypes would be:

Accepted Answer

A)  200 normal gray, 200 normal black, 200 vestigial gray, and 200 vestigial black 
B)  400 normal gray and 400 vestigial black 
C)  800 normal gray 
D)  800 vestigial black 
E)  450 normal gray, 150 normal black, 150 vestigial gray, and 50 vestigial black 
A)  200 normal gray, 200 normal black, 200 vestigial gray, and 200 vestigial black 
B)  400 normal gray and 400 vestigial black 
C)  800 normal gray 
D)  800 vestigial black 
E)  450 normal gray, 150 normal black, 150 vestigial gray, and 50 vestigial black

Question 11

What are the possible phenotypes of the children if the mother has Type O blood and the father has type AB blood? (Use the Punnett square to verify your answer.)

Accepted Answer

A)  AB only 
B)  A, B 
C)  A, AB 
D)  A, B, AB 
E)  A, B, O 
A)  AB only 
B)  A, B 
C)  A, AB 
D)  A, B, AB 
E)  A, B, O

Question 12

____ refers to multiple independent pairs of genes having similar and additive effects on the same characteristic.

Accepted Answer

A)  Codominance 
B)  Epistasis 
C)  Polygenic inheritance 
D)  Complete dominance 
E)  Additive dominance 
A)  Codominance 
B)  Epistasis 
C)  Polygenic inheritance 
D)  Complete dominance 
E)  Additive dominance

Question 13

Match between columns
                        Premises: The presence of certain alleles at one locus can prevent or mask the expression of alleles at different locus.
Heterozygous individuals have a phenotype that is intermediate between those of the parents .
One defective enzyme may affect function of many cells.
Heterozygous individuals express both homozygous phenotypes.
Offspring exhibit continuous variation in phenotypes.

Accepted Answer

The Answer of incomplete dominance and codominance and epistasis and is...

Question 14

Match between columns
                        Premises: The expression of a trait in an organism
The genetic composition of an organism
Alternative gene variants
The inheritance of traits from one generation to the next
The differences in traits observed in parents vs. offspring
The study of heredity

Accepted Answer

The Answer of phenotype and heredity and allele and locus is...

Question 15

Mendel's principle of independent assortment is explained by which metaphase I event?

Accepted Answer

A)  separation of homologous chromosomes 
B)  crossing-over 
C)  synapsis 
D)  cytokinesis 
E)  random orientation of homologous chromosomes on the metaphase plate 
A)  separation of homologous chromosomes 
B)  crossing-over 
C)  synapsis 
D)  cytokinesis 
E)  random orientation of homologous chromosomes on the metaphase plate

Question 16

A diploid individual has a maximum of ____ different alleles for a particular locus.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  more than four 
A)  one 
B)  two 
C)  three 
D)  four 
E)  more than four

Question 17

Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are heterozygous (Bb)?

Accepted Answer

A)  BB and Bb 
B)  BB, Bb, and bb 
C)  BB only 
D)  Bb only 
E)  bb only 
A)  BB and Bb 
B)  BB, Bb, and bb 
C)  BB only 
D)  Bb only 
E)  bb only

Question 18

What is the probability that two lizards heterozygous for stripes on their tails (Ss) will produce offspring homozygous for no stripes (ss)?

Accepted Answer

A)  1 
B)  1/2 
C)  1/4 
D)  1/8 
E)  0 
A)  1 
B)  1/2 
C)  1/4 
D)  1/8 
E)  0

Question 19

If an allele is dominant, then:

Accepted Answer

A)  its phenotype is only expressed in heterozygous individuals. 
B)  its phenotype is expressed only in homozygous individuals.. 
C)  one allele can mask the expression of a recessive allele in a hybrid. 
D)  its phenotype is always expressed in all generations. 
E)  its phenotype is more beneficial than the recessive phenotype. 
A)  its phenotype is only expressed in heterozygous individuals. 
B)  its phenotype is expressed only in homozygous individuals.. 
C)  one allele can mask the expression of a recessive allele in a hybrid. 
D)  its phenotype is always expressed in all generations. 
E)  its phenotype is more beneficial than the recessive phenotype.

Question 20

Compare and contrast the following pairs of related terms: gene and allele, genotype and phenotype, homozygous and heterozygous.

Accepted Answer

Phenotype refers to the physical appeara

Exam 11: The Basic Principles of Heredity

The product rule is used to determine the probability that two parents with a Bb genotype will have a child who also has the Bb genotype. __________________

In genetics, map units express the distance between:

The chromosome theory of inheritance, developed by Sutton and Boveri, provided an explanation for Mendel's principle of segregation by proposing that:

In a Punnett square, the alleles available for inheritance from one parent are listed across the top and those from the other parent are listed across the left side. __________________

The theory of blending inheritance was shown to be false by Mendel's observations of dominant and recessive alleles. __________________

In humans, assume that the allele for brown eyes is dominant and the allele for blue eyes is recessive. If two brown-eyed individuals have a child with blue eyes, that means:

In rabbits, coat color is governed by four alleles: C for dark gray, Cch for chinchilla, Ch for himalayan, and c for white. Each individual rabbit inherits a combined total of _____ coat color allele(s) from its parents.

The sex of a human is determined by the:

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb). If there are 800 F1 progeny, the expected phenotypes would be:

What are the possible phenotypes of the children if the mother has Type O blood and the father has type AB blood? (Use the Punnett square to verify your answer.)

____ refers to multiple independent pairs of genes having similar and additive effects on the same characteristic.

Mendel's principle of independent assortment is explained by which metaphase I event?

A diploid individual has a maximum of ____ different alleles for a particular locus.

Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are heterozygous (Bb)?

What is the probability that two lizards heterozygous for stripes on their tails (Ss) will produce offspring homozygous for no stripes (ss)?

If an allele is dominant, then:

Compare and contrast the following pairs of related terms: gene and allele, genotype and phenotype, homozygous and heterozygous.

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

In rabbits, coat color is governed by four alleles: C for dark gray, C^ch for chinchilla, C^h for himalayan, and c for white. Each individual rabbit inherits a combined total of _____ coat color allele(s) from its parents.

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb). If there are 800 F₁ progeny, the expected phenotypes would be: