Question 1

Red-green colorblindness is a recessive X-linked trait.If a female is red-green colorblind,which of the following is TRUE?

Accepted Answer

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

Question 2

Morgan 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 is the chance that another offspring produced by the same parents will be albino?

Accepted Answer

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

Question 3

If both parents express a particular trait,but their child does not,what does this indicate about the trait?

Accepted Answer

A)   The trait is an autosomal dominant trait.
B)   The trait is an autosomal recessive trait.
C)   The trait is sex-linked recessive.
D)   The trait is sex-linked dominant.
E)   This is a lethal trait.

Question 4

Which variable will determine the coat color in Himalayan rabbits?

Accepted Answer

A)   the genetics will determine it 100%
B)   the environment will determine it 100%
C)   both the genetics and environment will determine the coat color
D)   neither the environment or genes will play a role in determining coat color

Question 5

Ryan has type A blood and is color-blind (an X-linked recessive trait) .Which of the following combinations are possible for his parents?

Accepted Answer

A)   1, 2, and 3
B)   1 and 2
C)   1, 3, and 4
D)   1, 2, 3, 4, and 5
E)   1, 3, 4, and 5

Question 6

Linked genes

Accepted Answer

A)   always assort independently.
B)   undergo crossing over of sister chromatids at a high rate.
C)   are found on homologous chromosomes.
D)   never cross over during prophase I.
E)   tend to be close together on a single chromosome.

Question 7

If the parental genotype is EeWw what are the potential allele combinations that could occur at the end of Meiosis?

Accepted Answer

A)   EW, Ew, eW, and ew
B)   EW, EE, eW, and ww
C)   WW, Ew, EW, and ew
D)   EE, WW, ee, and ww
E)   EW, Ew, ee and ww

Question 8

A male is always homozygous for a trait that is

Accepted Answer

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

Question 9

What type of disorder is muscular dystrophy classified as?

Accepted Answer

A)   sex-linked recessive
B)   sex-linked dominant
C)   codominance
D)   pleiotropic
E)   polygenic inheritance

Question 10

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)   alkaptonuria

Question 11

Vitamin-D resistant rickets is a sex-linked dominant trait,which leads to softening of the bones which can cause fractures and deformities.Rickets is often due to a deficiency of vitamin D,however,with vitamin-D resistant rickets,ingestion of vitamin D is ineffective.Maria's mother is normal and does not display any symptoms of this disease; however,Maria's father has the disease.Maria marries a man that does not have the disease.What is the probability that they will have a son that has the disease?

Accepted Answer

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

Exam 10: Patterns of Inheritance

Linked genes

Correct Answer
verified

Correct Answer
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Correct Answer
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Which variable will determine the coat color in Himalayan rabbits?

Correct Answer
verified

If both parents express a particular trait,but their child does not,what does this indicate about the trait?

Correct Answer
verified

What type of disorder is muscular dystrophy classified as?

Correct Answer
verified

If the parental genotype is EeWw what are the potential allele combinations that could occur at the end of Meiosis?

Correct Answer
verified

A male is always homozygous for a trait that is

Correct Answer
verified

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

Correct Answer
verified

Ryan has type A blood and is color-blind (an X-linked recessive trait) .Which of the following combinations are possible for his parents?

Correct Answer
verified

Red-green colorblindness is a recessive X-linked trait.If a female is red-green colorblind,which of the following is TRUE?

Correct Answer
verified

Exam 10: Patterns of Inheritance

Linked genes

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which variable will determine the coat color in Himalayan rabbits?

Correct AnswerverifiedShow Answer

If both parents express a particular trait,but their child does not,what does this indicate about the trait?

Correct AnswerverifiedShow Answer

What type of disorder is muscular dystrophy classified as?

Correct AnswerverifiedShow Answer

If the parental genotype is EeWw what are the potential allele combinations that could occur at the end of Meiosis?

Correct AnswerverifiedShow Answer

A male is always homozygous for a trait that is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Ryan has type A blood and is color-blind (an X-linked recessive trait) .Which of the following combinations are possible for his parents?

Correct AnswerverifiedShow Answer

Red-green colorblindness is a recessive X-linked trait.If a female is red-green colorblind,which of the following is TRUE?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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