Question 1

If a daughter expresses an X-linked recessive gene,she probably inherited the trait from:

Accepted Answer

A)  her mother.
B)  her father.
C)  both parents.
D)  neither parent.
E)  her grandmother.

Question 2

The state of having more than two sets of chromosomes is called:

Accepted Answer

A)  autosomal.
B)  dominant.
C)  polyploidy.
D)  aneuploidy.
E)  nondisjunction.

Question 3

What is one difference between polyploidy and aneuploidy?

Accepted Answer

A)  Polyploidy is extra sets of chromosomes; aneuploidy occurs when there are either more or fewer chromosomes than normally exist in its species full set.
B)  Humans can be viable as polyploids but not as aneuploids.
C)  Polyploidy is extra sex chromosomes; aneuploidy is extra autosomes.
D)  Polyploidy is one extra chromosome; aneuploidy is one missing chromosome.
E)  Polyploidy causes diseases and disorders in humans; aneuploidy does not.

Question 4

A karyotype reveals that a woman is carrying a fetus that has 47 chromosomes.The test reveals that the genotype of the fetus is XXY.Which of the following statements is correct?

Accepted Answer

A)  The fetus has Down syndrome, and most likely a nondisjunction event occurred in the mother during egg formation.
B)  The fetus has Turner syndrome, and most likely a nondisjunction event occurred in the mother during egg formation.
C)  The fetus has Klinefelter syndrome.
D)  The fetus has an autosomal disorder.

Question 5

Hemophelia is an X-linked recessive disorder.A mother without the allele and a father with the allele have a daughter.The daughter then marries a man with hemophilia.What is the genotype of the daughter? What is the probability that the daughter's children will develop the disease?

Accepted Answer

A Punnett square will show tha...

Question 6

If a disease is caused by a dominant allele,it means that a person with the disease:

Accepted Answer

A)  will always pass it on to all their children.
B)  will pass it on to one-fourth of their children.
C)  must be homozygous dominant for the allele.
D)  must be heterozygous for the allele.
E)  could be either homozygous or heterozygous for the allele.

Question 7

The human genome has how many pairs of autosomal chromosomes?

Accepted Answer

A)  46 pairs
B)  44 pairs
C)  23 pairs
D)  22 pairs
E)  24 pairs

Question 8

Genes not found on the sex chromosomes will be found on:

Accepted Answer

A)  X chromosomes.
B)  Y chromosomes.
C)  autosomes.
D)  centrosomes.

Question 9

What do hemophilia,Duchenne muscular dystrophy,and red-green color blindness have in common?

Accepted Answer

A)  They are X-linked.
B)  They are more common in females than in males.
C)  They are caused by inheritance of an extra sex chromosome.
D)  They are caused by inheritance of an extra autosome.
E)  The gene that causes them is on the Y chromosome.

Question 10

Aneuploid human embryos are least likely to survive except those involving:

Accepted Answer

A)  chromosome 1, 2, 3, X, Y.
B)  chromosome 1, 2, 3, 4, 5.
C)  chromosome 13, 18, 21, X, Y.
D)  chromosome 6, 7, 8, 9, 10.
E)  chromosome 11, 12, 14, 15.

Question 11

Which of the following is an autosomal recessive disorder?

Accepted Answer

A)  hemophilia
B)  Huntington disease
C)  Down syndrome
D)  sickle-cell anemia
E)  Turner syndrome

Question 12

Polyploidy is better tolerated in plants than in animals.

Accepted Answer

A) True 
 B)False

Question 13

Explain what causes aneuploidy.

Accepted Answer

Nondisjunction is failure of homologous ...

Question 14

Match between columns
                        Premises: This produces cri-du-chat syndrome.
This has been involved in producing gene families and has been vital to evolution.
This event may occur during meiosis I or meiosis II.
Only 1 percent of human embryos with this condition survive.
Non-homologous chromosomes have exchanged parts.

Accepted Answer

The Answer of aneuploidy and translocation and nondisjunction and deletion is...

Question 15

Red-green color blindness is an X-linked recessive trait in humans.A color-blind woman and a man with normal vision have a son.What is the probability that the son is color blind?

Accepted Answer

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

Question 16

Women do not express X-linked recessive characters.

Accepted Answer

A) True 
 B)False

Question 17

Duchenne muscular dystrophy is a recessive disorder resulting in a wasting away of the muscles.How would you design a study to determine if the disorder is X-linked or autosomal? How would you be able to determine if it is X-linked or autosomal?

Accepted Answer

The study would analyze the inheritance ...

Question 18

Hemophilia,Duchenne muscular dystrophy,and color blindness are examples of ________ disorders.

Accepted Answer

The answer of Hemophilia,Duchenne muscular dystrophy,and color blindness are examples...

Question 19

What single attribute determines that a human fetus is male?

Accepted Answer

A)  the absence of a second X chromosome
B)  the absence of a Y chromosome
C)  the presence of a Y chromosome
D)  the presence of two X chromosomes

Question 20

A woman who does not carry the color-blindness allele has children with a man who is color blind.What proportion of their children will be color blind?

Accepted Answer

A)  all
B)  1/4
C)  1/2
D)  3/4
E)  none

Exam 12: Units of Heredity: Chromosomes and Inheritance

Hemophelia is an X-linked recessive disorder.A mother without the allele and a father with the allele have a daughter.The daughter then marries a man with hemophilia.What is the genotype of the daughter? What is the probability that the daughter's children will develop the disease?

Correct Answer
verified
A Punnett square will show tha...
View Answer

Women do not express X-linked recessive characters.

Correct Answer
verified

Aneuploid human embryos are least likely to survive except those involving:

Correct Answer
verified

Match the following.

What is one difference between polyploidy and aneuploidy?

Correct Answer
verified

Red-green color blindness is an X-linked recessive trait in humans.A color-blind woman and a man with normal vision have a son.What is the probability that the son is color blind?

Correct Answer
verified

A woman who does not carry the color-blindness allele has children with a man who is color blind.What proportion of their children will be color blind?

Correct Answer
verified

Genes not found on the sex chromosomes will be found on:

Correct Answer
verified

Which of the following is an autosomal recessive disorder?

Correct Answer
verified

If a daughter expresses an X-linked recessive gene,she probably inherited the trait from:

Correct Answer
verified

Explain what causes aneuploidy.

Correct Answer
verified
Nondisjunction is failure of homologous ...
View Answer

The human genome has how many pairs of autosomal chromosomes?

Correct Answer
verified

Hemophilia,Duchenne muscular dystrophy,and color blindness are examples of ________ disorders.

Correct Answer
verified

What single attribute determines that a human fetus is male?

Correct Answer
verified

What do hemophilia,Duchenne muscular dystrophy,and red-green color blindness have in common?

Correct Answer
verified

A karyotype reveals that a woman is carrying a fetus that has 47 chromosomes.The test reveals that the genotype of the fetus is XXY.Which of the following statements is correct?

Correct Answer
verified

If a disease is caused by a dominant allele,it means that a person with the disease:

Correct Answer
verified

Duchenne muscular dystrophy is a recessive disorder resulting in a wasting away of the muscles.How would you design a study to determine if the disorder is X-linked or autosomal? How would you be able to determine if it is X-linked or autosomal?

Correct Answer
verified
The study would analyze the inheritance ...
View Answer

Polyploidy is better tolerated in plants than in animals.

Correct Answer
verified

The state of having more than two sets of chromosomes is called:

Correct Answer
verified

Exam 12: Units of Heredity: Chromosomes and Inheritance

Hemophelia is an X-linked recessive disorder.A mother without the allele and a father with the allele have a daughter.The daughter then marries a man with hemophilia.What is the genotype of the daughter? What is the probability that the daughter's children will develop the disease?

Correct AnswerverifiedA Punnett square will show tha...View AnswerShow Answer

Women do not express X-linked recessive characters.

Correct AnswerverifiedShow Answer

Aneuploid human embryos are least likely to survive except those involving:

Correct AnswerverifiedShow Answer

Match the following.

What is one difference between polyploidy and aneuploidy?

Correct AnswerverifiedShow Answer

Red-green color blindness is an X-linked recessive trait in humans.A color-blind woman and a man with normal vision have a son.What is the probability that the son is color blind?

Correct AnswerverifiedShow Answer

A woman who does not carry the color-blindness allele has children with a man who is color blind.What proportion of their children will be color blind?

Correct AnswerverifiedShow Answer

Genes not found on the sex chromosomes will be found on:

Correct AnswerverifiedShow Answer

Which of the following is an autosomal recessive disorder?

Correct AnswerverifiedShow Answer

If a daughter expresses an X-linked recessive gene,she probably inherited the trait from:

Correct AnswerverifiedShow Answer

Explain what causes aneuploidy.

Correct AnswerverifiedNondisjunction is failure of homologous ...View AnswerShow Answer

The human genome has how many pairs of autosomal chromosomes?

Correct AnswerverifiedShow Answer

Hemophilia,Duchenne muscular dystrophy,and color blindness are examples of ________ disorders.

Correct AnswerverifiedShow Answer

What single attribute determines that a human fetus is male?

Correct AnswerverifiedShow Answer

What do hemophilia,Duchenne muscular dystrophy,and red-green color blindness have in common?

Correct AnswerverifiedShow Answer

A karyotype reveals that a woman is carrying a fetus that has 47 chromosomes.The test reveals that the genotype of the fetus is XXY.Which of the following statements is correct?

Correct AnswerverifiedShow Answer

If a disease is caused by a dominant allele,it means that a person with the disease:

Correct AnswerverifiedShow Answer

Duchenne muscular dystrophy is a recessive disorder resulting in a wasting away of the muscles.How would you design a study to determine if the disorder is X-linked or autosomal? How would you be able to determine if it is X-linked or autosomal?

Correct AnswerverifiedThe study would analyze the inheritance ...View AnswerShow Answer

Polyploidy is better tolerated in plants than in animals.

Correct AnswerverifiedShow Answer

The state of having more than two sets of chromosomes is called:

Correct AnswerverifiedShow Answer

Correct Answer
verified
A Punnett square will show tha...
View Answer

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
verified
Nondisjunction is failure of homologous ...
View Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The study would analyze the inheritance ...
View Answer

Correct Answer
verified

Correct Answer
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