Question 1

If you cross two pea plants,one with green peas and the other with yellow peas,and all of the offspring have yellow peas,you conclude

Accepted Answer

A) green is dominant over yellow. 
B) yellow and green are codominant. 
C) yellow is incompletely dominant over green. 
D) yellow is dominant over green. 
E) color is random in pea plants. 
A) green is dominant over yellow. 
B) yellow and green are codominant. 
C) yellow is incompletely dominant over green. 
D) yellow is dominant over green. 
E) color is random in pea plants.

Question 2

Homologous chromosomes have

Accepted Answer

A) the same genes but can have different alleles. 
B) the same genes and alleles. 
C) different genes and alleles. 
D) different genes,but can have the same alleles. 
A) the same genes but can have different alleles. 
B) the same genes and alleles. 
C) different genes and alleles. 
D) different genes,but can have the same alleles.

Question 3

If an individual is heterozygous for a particular trait

Accepted Answer

A) each parent contributed a different allele for that trait. 
B) each parent contributed the same allele for that trait. 
C) one parent contributed two different alleles for that trait. 
D) one parent contributed two copies of the same allele for that trait. 
E) a mutation must have occurred. 
A) each parent contributed a different allele for that trait. 
B) each parent contributed the same allele for that trait. 
C) one parent contributed two different alleles for that trait. 
D) one parent contributed two copies of the same allele for that trait. 
E) a mutation must have occurred.

Question 4

The segregation of alleles for a gene on one chromosome does not influence the segregation of alleles for a gene on another chromosome during gamete formation is Mendel's

Accepted Answer

A) law of independent assortment. 
B) law of random fertilization. 
C) law of population dynamics. 
D) law of crossing over. 
E) law of segregation. 
A) law of independent assortment. 
B) law of random fertilization. 
C) law of population dynamics. 
D) law of crossing over. 
E) law of segregation.

Question 5

In the ABO blood type system,there are six possible genotypes,but only two possible phenotypes.

Accepted Answer

A) True 
 B)False

Question 6

In an inherited form of high cholesterol,HH individuals have a blood cholesterol level greater than 500mg/dL,RH individuals are near 300mg/dL,and normal (RR)cholesterol levels should be less than 200mg/dL.The H allele is ___ to the R allele.

Accepted Answer

A) codominant 
B) dominant 
C) recessive 
D) homozygous 
E) incompletely dominant 
A) codominant 
B) dominant 
C) recessive 
D) homozygous 
E) incompletely dominant

Question 7

X-linked recessive disorders affect more females than males.

Accepted Answer

A) True 
 B)False

Question 8

Phenotype means

Accepted Answer

A) the number of gametes in an individual. 
B) the number of chromosomes in an individual. 
C) the combination of alleles in an individual. 
D) the genes an individual has. 
E) the observable expression of the genes in an individual. 
A) the number of gametes in an individual. 
B) the number of chromosomes in an individual. 
C) the combination of alleles in an individual. 
D) the genes an individual has. 
E) the observable expression of the genes in an individual.

Question 9

If a pea plant is homozygous recessive for yellow seeds (yy),which gametes will it produce?

Accepted Answer

A) Y only 
B) y only 
C) Yy 
D) YYyy 
E) Y or y 
A) Y only 
B) y only 
C) Yy 
D) YYyy 
E) Y or y

Question 10

If a genetic counselor examines a pedigree chart and notices an occurrence of a disease in every generation,the counselor would assume that the disease was caused by

Accepted Answer

A) a new reoccurring mutation. 
B) an autosomal recessive disorder. 
C) a chromosomal abnormality. 
D) an autosomal dominant disorder. 
E) having an extra set of chromosomes. 
A) a new reoccurring mutation. 
B) an autosomal recessive disorder. 
C) a chromosomal abnormality. 
D) an autosomal dominant disorder. 
E) having an extra set of chromosomes.

Question 11

If an individual is homozygous for a particular trait

Accepted Answer

A) each parent contributed a different allele for that trait. 
B) one parent contributed two different alleles for that trait. 
C) each parent contributed the same allele for that trait. 
D) one parent contributed two copies of the same allele for that trait. 
E) a mutation must have occurred. 
A) each parent contributed a different allele for that trait. 
B) one parent contributed two different alleles for that trait. 
C) each parent contributed the same allele for that trait. 
D) one parent contributed two copies of the same allele for that trait. 
E) a mutation must have occurred.

Question 12

If a scientist wants to perform a monohybrid cross for stem length in pea plants,which of the following crosses should be performed?

Accepted Answer

A) Tt x TT 
B) Tt x tt 
C) TT x TT. 
D) Tt x tt. 
E) Tt x Tt 
A) Tt x TT 
B) Tt x tt 
C) TT x TT. 
D) Tt x tt. 
E) Tt x Tt

Question 13

Mendel called a masking trait

Accepted Answer

A) dominant. 
B) recessive. 
C) homologous. 
D) homozygous. 
E) heterozygous. 
A) dominant. 
B) recessive. 
C) homologous. 
D) homozygous. 
E) heterozygous.

Question 14

Sexual reproduction passes on hereditary information through

Accepted Answer

A) gametes produced by mitosis. 
B) gametes produced by meiosis. 
C) only autosomes. 
D) only sex chromosomes. 
E) only linked genes. 
A) gametes produced by mitosis. 
B) gametes produced by meiosis. 
C) only autosomes. 
D) only sex chromosomes. 
E) only linked genes.

Question 15

The most common phenotype or allele for a gene in a population is referred to as

Accepted Answer

A) the wild type. 
B) the dominant population. 
C) the recessive population. 
D) the P generation. 
E) the F1 generation. 
A) the wild type. 
B) the dominant population. 
C) the recessive population. 
D) the P generation. 
E) the F1 generation.

Question 16

In the ABO blood type system,the IA allele is _____ with the IB allele.

Accepted Answer

A) dominant 
B) codominant 
C) recessive 
D) homologous 
E) heterologous 
A) dominant 
B) codominant 
C) recessive 
D) homologous 
E) heterologous

Question 17

The pea plant (Pisum sativum)is a good choice for studying heredity because it

Accepted Answer

A) develops slowly. 
B) produces only a few offspring. 
C) is easy to control which plants mate with each other. 
D) has only a few traits that appear in two easily distinguishable forms. 
E) All answers are correct. 
A) develops slowly. 
B) produces only a few offspring. 
C) is easy to control which plants mate with each other. 
D) has only a few traits that appear in two easily distinguishable forms. 
E) All answers are correct.

Question 18

Hemophilia A is an X-linked recessive disorder.What is the probability that a daughter will have hemophilia if the parents are a normal man and a woman who is a carrier?

Accepted Answer

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

Question 19

The environment only rarely affects gene expression.

Accepted Answer

A) True 
 B)False

Question 20

What diagram is shown in the figure?

Accepted Answer

A) pedigree 
B) chromosome map 
C) Punnett square 
D) gene map 
E) allele chart 
A) pedigree 
B) chromosome map 
C) Punnett square 
D) gene map 
E) allele chart

Exam 10: Patterns of Inheritance

If you cross two pea plants,one with green peas and the other with yellow peas,and all of the offspring have yellow peas,you conclude

Homologous chromosomes have

If an individual is heterozygous for a particular trait

The segregation of alleles for a gene on one chromosome does not influence the segregation of alleles for a gene on another chromosome during gamete formation is Mendel's

In the ABO blood type system,there are six possible genotypes,but only two possible phenotypes.

In an inherited form of high cholesterol,HH individuals have a blood cholesterol level greater than 500mg/dL,RH individuals are near 300mg/dL,and normal (RR)cholesterol levels should be less than 200mg/dL.The H allele is ___ to the R allele.

X-linked recessive disorders affect more females than males.

Phenotype means

If a pea plant is homozygous recessive for yellow seeds (yy),which gametes will it produce?

If a genetic counselor examines a pedigree chart and notices an occurrence of a disease in every generation,the counselor would assume that the disease was caused by

If an individual is homozygous for a particular trait

If a scientist wants to perform a monohybrid cross for stem length in pea plants,which of the following crosses should be performed?

Mendel called a masking trait

Sexual reproduction passes on hereditary information through

The most common phenotype or allele for a gene in a population is referred to as

In the ABO blood type system,the IA allele is _____ with the IB allele.

The pea plant (Pisum sativum)is a good choice for studying heredity because it

Hemophilia A is an X-linked recessive disorder.What is the probability that a daughter will have hemophilia if the parents are a normal man and a woman who is a carrier?

The environment only rarely affects gene expression.

What diagram is shown in the figure?

Scientific Study of Life

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The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

Filters

In the ABO blood type system,the I^A allele is _____ with the I^B allele.