Question 1

If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio?

Accepted Answer

A)   1 tall:1 short
B)   1 tall:2 short
C)   3 tall:1 short
D)   all tall
E)   all shortF) A) and B)
G) A) and E)

Question 2

In fruit flys, long-wings (L)  is dominant to short-wings (l)  and a gray body color (G)  is dominant to black body color (b) . A long-winged Drosophila female with a gray body mates with a black, short-winged male fly (llgg) . The phenotypic ratio of the offspring is 1:1:1:1. What is the genotype of the female fly?

Accepted Answer

A)   LlGg
B)   LLGG
C)   llgg
D)   LLgg
E)   llGGF) All of the above
G) A) and B)

Question 3

The filled-in squares of a Punnett square represent

Accepted Answer

A)   the gametes from both parents.
B)   all possible combinations of gametes based on a cross between the two parents.
C)   an exact ratio that must always occur when the same parents have four offspring.
D)   examples of some of the offspring that can arise from a one-trait cross.
E)   the gametes from one parent.F) None of the above
G) B) and D)

Question 4

Matt breeds and sells snakes. He knows that he can make the most money by breeding and selling albino snakes. Albinism is a recessive trait. His female albino corn snake just produced six offspring. Two displayed normal coloration and four were albino. What do you know about the genotype of the father?

Accepted Answer

A)   He must be homozygous dominant.
B)   He must be heterozygous.
C)   He must be homozygous recessive.
D)   He could be either heterozygous or homozygous dominant.
E)   There is not enough information to determine the father's genotype.F) C) and D)
G) None of the above

Question 5

A male is always homozygous for a trait that is

Accepted Answer

A)   codominant.
B)   X-linked.
C)   autosomal.
D)   dominant.
E)   dihybrid.F) A) and C)
G) B) and D)

Question 6

A heterozygote for a trait exhibiting incomplete dominance will

Accepted Answer

A)   express the dominant trait.
B)   express the recessive trait.
C)   exhibit an intermediate phenotype.
D)   express both alleles.
E)   exhibit an intermediate genotype.F) D) and E)
G) C) and D)

Question 7

Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in acidic soil, it has blue flowers; if the same plant is transplanted into soil that is alkaline, the flowers produced will be pink. This is an example of

Accepted Answer

A)   environmental influence.
B)   codominance.
C)   incomplete dominance.
D)   polygenetic inheritance.
E)   monohybrid inheritance.F) B) and C)
G) C) and D)

Question 8

What is the inheritance pattern of hemophila?

Accepted Answer

A)   sex-linked recessive
B)   sex-linked dominant
C)   codominance
D)   polygenic
E)   pleiotropicF) A) and B)
G) B) and E)

Question 9

People who suffer fromMarfan syndrome have disproportionately long limbs, a weakened aorta, and poor eyesight. All of these characteristics are due to the production of abnormal connective tissue, resulting from a single defective gene. Marfan syndrome is an example of

Accepted Answer

A)   pleiotropy.
B)   polygenic inheritance.
C)   multiple allelism.
D)   epistasis.
E)   codominance.F) A) and E)
G) B) and D)

Question 10

What genetic disorder is associated with the lack of an enzyme necessary for the normal metabolism of the amino acid phenylalanine?

Accepted Answer

A)   phenylketonuria (PKU) 
B)   Marfan syndrome
C)   Huntington disease
D)   sickle-cell disease
E)   cystic fibrosis (CF) F) A) and B)
G) C) and D)

Question 11

Which of the following is an autosomal dominant disorder?

Accepted Answer

A)   Huntington's disease
B)   sickle-cell disease
C)   alkaptonuria
D)   cystic fibrosis
E)   methemoglobinemiaF) All of the above
G) C) and D)

Question 12

Which of the following is a sex-linked recessive disorder?

Accepted Answer

A)   color blindness
B)   Marfan syndrome
C)   sickle-cell disease
D)   cystic fibrosis
E)   alkaptonuriaF) A) and D)
G) C) and D)

Question 13

Which of the following is an example of a phenotype?

Accepted Answer

A)   AAGg
B)   freckles
C)   AA
D)   Ag
E)   GgF) A) and E)
G) A) and B)

Question 14

In fruit flies, red-eyes are dominant to white-eyes. In addition, eye color is a sex-linked trait. If a homozygous red-eyed female Drosophila mates with a red-eyed male Drosophila. What proportion of the female offspring will have white eyes?

Accepted Answer

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

Question 15

A cow with black and white patches is produced from a white bull and a black cow. This is an example of

Accepted Answer

A)   incomplete dominance.
B)   codominance.
C)   dominance/recessive trait.
D)   polygenic.
E)   pleiotropy.F) B) and D)
G) A) and B)

Question 16

What is the inheritance pattern of Duchenne muscular dystrophy?

Accepted Answer

A)   sex-linked recessive
B)   sex-linked dominant
C)   codominance
D)   pleiotropic
E)   polygenic inheritanceF) A) and D)
G) C) and E)

Question 17

A woman with type AB blood marries a man who is heterozygous for type B blood. If they have children, what are all the possible blood types for the children?

Accepted Answer

A)   AB only
B)   AB, AA, AO, and BO
C)   AB, BB, AO, and BO
D)   BB only
E)   AA, BB, and ABF) A) and B)
G) C) and D)

Question 18

Determine if the following statement is true or false. A man with blood type A and a woman with blood type B can have a baby with blood type O.

Accepted Answer

A)   True, because although A and B are the dominant blood types, both individuals could carry a type O allele.
B)   False, the child must have type AB blood.
C)   True, because A and B are codominant.
D)   False, because type A and B are dominant blood types and these individuals cannot have offspring with the recessive blood type.
E)   True, because only one O allele is needed.F) A) and E)
G) C) and D)

Question 19

Red-green color blindness is a recessive X-linked trait. If a female is red-green color-blind, which of the following is true?

Accepted Answer

A)   Her mother must be color-blind.
B)   Both her parents must be color-blind.
C)   Both her parents are carriers of the recessive allele.
D)   Her father must be color-blind.
E)   Women cannot exhibit red-green color blindness because they have two X chromosomes.F) A) and C)
G) D) and E)

Question 20

Which of the following is mismatched?

Accepted Answer

A)   physical expression of a trait - phenotype
B)   allele that masks expression of alternate allele - dominant
C)   identical alleles - heterozygous
D)   allele whose expression can be masked by an alternate allele - recessive
E)   the specific alleles that an individual has - genotypeF) C) and E)
G) A) and C)

Exam 10: Patterns of Inheritance

Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in acidic soil, it has blue flowers; if the same plant is transplanted into soil that is alkaline, the flowers produced will be pink. This is an example of

Correct Answer
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Which of the following is an example of a phenotype?

Correct Answer
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Which of the following is a sex-linked recessive disorder?

Correct Answer
verified

A heterozygote for a trait exhibiting incomplete dominance will

Correct Answer
verified

A cow with black and white patches is produced from a white bull and a black cow. This is an example of

Correct Answer
verified

Correct Answer
verified

Which of the following is an autosomal dominant disorder?

Correct Answer
verified

Which of the following is mismatched?

Correct Answer
verified

Correct Answer
verified

People who suffer fromMarfan syndrome have disproportionately long limbs, a weakened aorta, and poor eyesight. All of these characteristics are due to the production of abnormal connective tissue, resulting from a single defective gene. Marfan syndrome is an example of

Correct Answer
verified

What is the inheritance pattern of hemophila?

Correct Answer
verified

What is the inheritance pattern of Duchenne muscular dystrophy?

Correct Answer
verified

A woman with type AB blood marries a man who is heterozygous for type B blood. If they have children, what are all the possible blood types for the children?

Correct Answer
verified

If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio?

Correct Answer
verified

A male is always homozygous for a trait that is

Correct Answer
verified

What genetic disorder is associated with the lack of an enzyme necessary for the normal metabolism of the amino acid phenylalanine?

Correct Answer
verified

Determine if the following statement is true or false. A man with blood type A and a woman with blood type B can have a baby with blood type O.

Correct Answer
verified

In fruit flies, red-eyes are dominant to white-eyes. In addition, eye color is a sex-linked trait. If a homozygous red-eyed female Drosophila mates with a red-eyed male Drosophila. What proportion of the female offspring will have white eyes?

Correct Answer
verified

Red-green color blindness is a recessive X-linked trait. If a female is red-green color-blind, which of the following is true?

Correct Answer
verified

The filled-in squares of a Punnett square represent

Correct Answer
verified

Exam 10: Patterns of Inheritance

Hydrangeas are a flowering plant with large showy blooms. When a plant is grown in acidic soil, it has blue flowers; if the same plant is transplanted into soil that is alkaline, the flowers produced will be pink. This is an example of

Correct AnswerverifiedShow Answer

Which of the following is an example of a phenotype?

Correct AnswerverifiedShow Answer

Which of the following is a sex-linked recessive disorder?

Correct AnswerverifiedShow Answer

A heterozygote for a trait exhibiting incomplete dominance will

Correct AnswerverifiedShow Answer

A cow with black and white patches is produced from a white bull and a black cow. This is an example of

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is an autosomal dominant disorder?

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

People who suffer fromMarfan syndrome have disproportionately long limbs, a weakened aorta, and poor eyesight. All of these characteristics are due to the production of abnormal connective tissue, resulting from a single defective gene. Marfan syndrome is an example of

Correct AnswerverifiedShow Answer

What is the inheritance pattern of hemophila?

Correct AnswerverifiedShow Answer

What is the inheritance pattern of Duchenne muscular dystrophy?

Correct AnswerverifiedShow Answer

A woman with type AB blood marries a man who is heterozygous for type B blood. If they have children, what are all the possible blood types for the children?

Correct AnswerverifiedShow Answer

If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio?

Correct AnswerverifiedShow Answer

A male is always homozygous for a trait that is

Correct AnswerverifiedShow Answer

What genetic disorder is associated with the lack of an enzyme necessary for the normal metabolism of the amino acid phenylalanine?

Correct AnswerverifiedShow Answer

Determine if the following statement is true or false. A man with blood type A and a woman with blood type B can have a baby with blood type O.

Correct AnswerverifiedShow Answer

In fruit flies, red-eyes are dominant to white-eyes. In addition, eye color is a sex-linked trait. If a homozygous red-eyed female Drosophila mates with a red-eyed male Drosophila. What proportion of the female offspring will have white eyes?

Correct AnswerverifiedShow Answer

Red-green color blindness is a recessive X-linked trait. If a female is red-green color-blind, which of the following is true?

Correct AnswerverifiedShow Answer

The filled-in squares of a Punnett square represent

Correct AnswerverifiedShow Answer

Correct Answer
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