Question 1

Which disorder is characterized by an abnormal number of autosomes?

Accepted Answer

A) Turner syndrome 
B) Klinefelter syndrome 
C) trisomy X 
D) XYY syndrome 
E) Down syndrome 
A) Turner syndrome 
B) Klinefelter syndrome 
C) trisomy X 
D) XYY syndrome 
E) Down syndrome E

Question 2

The genetic makeup of an individual is the:

Accepted Answer

A) phenotype. 
B) sex cells. 
C) mutation 
D) gene pool. 
E) genotype. 
A) phenotype. 
B) sex cells. 
C) mutation 
D) gene pool. 
E) genotype. E

Question 3

When the two gametes that fuse to form a zygote contain different alleles of a given gene, the offspring is:

Accepted Answer

A) haploid. 
B) heterozygous. 
C) abnormal. 
D) homozygous. 
E) a new species. 
A) haploid. 
B) heterozygous. 
C) abnormal. 
D) homozygous. 
E) a new species. B

Question 4

What are the possible genotypes in a gamete of an organism that is HhTt if the two genes are located on separate chromosomes?

Accepted Answer

The answer of What are the possible genotypes in a...

Question 5

If we cross two pea plants, each heterozygous for yellow seed color genes, the expected ratio of yellow:green among the offspring will be:

Accepted Answer

A) 25% yellow:75% green. 
B) 50% yellow:50% green. 
C) 75% yellow:25% green. 
D) 100% yellow. 
E) 100% green. 
A) 25% yellow:75% green. 
B) 50% yellow:50% green. 
C) 75% yellow:25% green. 
D) 100% yellow. 
E) 100% green.

Question 6

What pattern of inheritance "breaks the law" of independent assortment?

Accepted Answer

Alleles that are close togethe

Question 7

Based on this figure, what would be the genotype of an individual pea plant that is homozygous for green- and constricted-pod and is 6 feet tall? (Assume that green and yellow pods are indicated by g and G, inflated and constricted pods by I and i, and height by T or t.)

Accepted Answer

A) GGIITT 
B) ggiitt 
C) GgIiTt 
D) GGiiTT 
E) ggiiTT 
A) GGIITT 
B) ggiitt 
C) GgIiTt 
D) GGiiTT 
E) ggiiTT

Question 8

When Mendel used true-breeding white flowers and true-breeding purple flowers as the parental generation, what were the results? (Purple flower is dominant over white.)

Accepted Answer

A) All the offspring had white flowers. 
B) All the offspring had purple flowers. 
C) 3/4 of the flowers produced were purple and 1/4 were white. 
D) 3/4 of the flowers produced were white and 1/4 were purple. 
E) 1/2 of the flowers produced were white and 1/2 were purple. 
A) All the offspring had white flowers. 
B) All the offspring had purple flowers. 
C) 3/4 of the flowers produced were purple and 1/4 were white. 
D) 3/4 of the flowers produced were white and 1/4 were purple. 
E) 1/2 of the flowers produced were white and 1/2 were purple.

Question 9

Two people with normal vision have two sons, one color blind and one with normal vision. If this couple then has six daughters, what percentage of the daughters should have normal color vision?

Accepted Answer

A) 25% 
B) 50% 
C) 75% 
D) 100% 
E) 0% 
A) 25% 
B) 50% 
C) 75% 
D) 100% 
E) 0%

Question 10

Blood typing is often used as evidence in paternity cases in court. In one case, the mother had blood type B and the child had blood type O. Which of the following blood types could the father NOT have?

Accepted Answer

A) A 
B) B 
C) AB 
D) O 
A) A 
B) B 
C) AB 
D) O

Question 11

A(n)________ is a portion of DNA that resides at a particular locus or site on a chromosome and encodes a particular function.

Accepted Answer

The answer of A(n)________ is a portion of DNA that...

Question 12

Yellow pea color is dominant over green pea color, despite the observation that most store-bought, edible peas are green. True or False?

Accepted Answer

A) True 
 B)False

Question 13

Round pea shape is dominant over wrinkled pea shape. If a round pea has a wrinkled parent, the round pea is:

Accepted Answer

A) RR. 
B) Rr. 
C) rr. 
D) haploid. 
E) recessive. 
A) RR. 
B) Rr. 
C) rr. 
D) haploid. 
E) recessive.

Question 14

Which of the following is true of genes that are found near each other on the same chromosome?

Accepted Answer

A) They tend to not be inherited together. 
B) They are not linked. 
C) They will be expressed differently in males than in females. 
D) They are linked and tend to be inherited together. 
A) They tend to not be inherited together. 
B) They are not linked. 
C) They will be expressed differently in males than in females. 
D) They are linked and tend to be inherited together.

Question 15

Traits controlled by sex-linked recessive genes are expressed more often in males because:

Accepted Answer

A) males inherit these genes from their fathers. 
B) males always carry two copies of these genes. 
C) all male offspring of a female carrier get the gene. 
D) the male has only one gene for the trait. 
E) males get more doses of the recessive gene than do females. 
A) males inherit these genes from their fathers. 
B) males always carry two copies of these genes. 
C) all male offspring of a female carrier get the gene. 
D) the male has only one gene for the trait. 
E) males get more doses of the recessive gene than do females.

Question 16

A female who is heterozygous for a recessive, sex-linked character is a ________ for that character.

Accepted Answer

The answer of A female who is heterozygous for a...

Question 17

In human blood types, the alleles for A and B are said to be ________ because they are both expressed.

Accepted Answer

The answer of In human blood types, the alleles for...

Question 18

A recessive allele on the X chromosome causes color blindness. A noncolor-blind woman (whose father is color blind)marries a color-blind man. What is the chance that their son will be color blind?

Accepted Answer

A) 0% 
B) 25% 
C) 50% 
D) 75% 
E) 100% 
A) 0% 
B) 25% 
C) 50% 
D) 75% 
E) 100%

Question 19

If the allele for inflated pea pods (I)is dominant to the allele for constricted pods (i), then the cross Ii × ii is expected to produce:

Accepted Answer

A) all peas with inflated pods. 
B) all peas with constricted pods. 
C) half with inflated and half with constricted pods. 
D) 3/4 with inflated and 1/4 with constricted pods. 
E) 3/4 with constricted and 1/4 with inflated pods. 
A) all peas with inflated pods. 
B) all peas with constricted pods. 
C) half with inflated and half with constricted pods. 
D) 3/4 with inflated and 1/4 with constricted pods. 
E) 3/4 with constricted and 1/4 with inflated pods.

Question 20

Only males can express sex-linked traits. True or False?

Accepted Answer

A) True 
 B)False

Exam 10: Patterns of Inheritance

Which disorder is characterized by an abnormal number of autosomes?

The genetic makeup of an individual is the:

When the two gametes that fuse to form a zygote contain different alleles of a given gene, the offspring is:

What are the possible genotypes in a gamete of an organism that is HhTt if the two genes are located on separate chromosomes?

If we cross two pea plants, each heterozygous for yellow seed color genes, the expected ratio of yellow:green among the offspring will be:

What pattern of inheritance "breaks the law" of independent assortment?

Based on this figure, what would be the genotype of an individual pea plant that is homozygous for green- and constricted-pod and is 6 feet tall? (Assume that green and yellow pods are indicated by g and G, inflated and constricted pods by I and i, and height by T or t.)

When Mendel used true-breeding white flowers and true-breeding purple flowers as the parental generation, what were the results? (Purple flower is dominant over white.)

Two people with normal vision have two sons, one color blind and one with normal vision. If this couple then has six daughters, what percentage of the daughters should have normal color vision?

Blood typing is often used as evidence in paternity cases in court. In one case, the mother had blood type B and the child had blood type O. Which of the following blood types could the father NOT have?

A(n)________ is a portion of DNA that resides at a particular locus or site on a chromosome and encodes a particular function.

Yellow pea color is dominant over green pea color, despite the observation that most store-bought, edible peas are green. True or False?

Round pea shape is dominant over wrinkled pea shape. If a round pea has a wrinkled parent, the round pea is:

Which of the following is true of genes that are found near each other on the same chromosome?

Traits controlled by sex-linked recessive genes are expressed more often in males because:

A female who is heterozygous for a recessive, sex-linked character is a ________ for that character.

In human blood types, the alleles for A and B are said to be ________ because they are both expressed.

A recessive allele on the X chromosome causes color blindness. A noncolor-blind woman (whose father is color blind)marries a color-blind man. What is the chance that their son will be color blind?

If the allele for inflated pea pods (I)is dominant to the allele for constricted pods (i), then the cross Ii × ii is expected to produce:

Only males can express sex-linked traits. True or False?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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