Question 1

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.F) A) and C)
G) A) and E)

Question 2

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.F) B) and E)
G) D) and E)

Question 3

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.F) B) and D)
G) A) and B)

Question 4

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.E) B) and C)
F) C) and D)

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

The environment only rarely affects gene expression.

Accepted Answer

A) True 
 B)False

Question 7

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.F) A) and B)
G) A) and C)

Question 8

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 dominantF) A) and C)
G) A) and B)

Question 9

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 TtF) A) and E)
G) B) and D)

Question 10

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%F) B) and C)
G) C) and D)

Question 11

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.F) All of the above
G) B) and D)

Question 12

Mendel called a masking trait

Accepted Answer

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

Question 13

X-linked recessive disorders affect more females than males.

Accepted Answer

A) True 
 B)False

Question 14

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.F) A) and B)
G) A) and C)

Question 15

What diagram is shown in the figure?

Accepted Answer

A)  pedigree
B)  chromosome map
C)  Punnett square
D)  gene map
E)  allele chartF) C) and D)
G) B) and E)

Question 16

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 yF) B) and C)
G) B) and E)

Question 17

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.F) B) and E)
G) B) and C)

Question 18

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.F) B) and E)
G) B) and C)

Question 19

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.F) A) and B)
G) B) and C)

Question 20

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)  heterologousF) A) and B)
G) A) and E)

Exam 10: Patterns of Inheritance

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

Correct AnswerverifiedShow Answer

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

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

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If an individual is homozygous for a particular trait

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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?

Correct AnswerverifiedShow Answer

Mendel called a masking trait

Correct AnswerverifiedShow Answer

If an individual is heterozygous for a particular trait

Correct AnswerverifiedShow Answer

Sexual reproduction passes on hereditary information through

Correct AnswerverifiedShow Answer

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

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Homologous chromosomes have

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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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What diagram is shown in the figure?

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

Correct AnswerverifiedShow Answer

Phenotype means

Correct AnswerverifiedShow Answer

X-linked recessive disorders affect more females than males.

Correct AnswerverifiedShow Answer

The environment only rarely affects gene expression.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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