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41) A human sperm cell possesses autosomes and A)  exactly the

Question : 41) A human sperm cell possesses autosomes and A)  exactly the : 1188980

 

 

41) A human sperm cell possesses autosomes and

A)  exactly the same genetic information as a body cell.

B)  an X chromosome always.

C)  either an X or a Y chromosome.

D)  a Y chromosome always.

E)  both an X and a Y chromosome.

 

 

42) In humans, the sex of the offspring is determined by the

A)  autosomes carried by the egg cell.

B)  autosomes carried by the sperm cell.

C)  sex chromosome carried by the egg cell.

D)  sex chromosome carried by the sperm cell.

E)  cytoplasm carried by the egg cell.

 

 

43) A sex-linked recessive condition that causes abnormal color vision is called

A)  cystic fibrosis.

B)  Down syndrome.

C)  hemophilia.

D)  color deficiency.

 

 

44) Traits controlled by sex-linked recessive genes are expressed more often in males because

A)  males inherit these genes from their fathers.

B)  males always carry two copies of these genes.

C)  all male offspring of a female carrier get the gene.

D)  the male has only one gene for the trait.

E)  males get more doses of the recessive gene than do females.

 

45) A recessive allele on the X chromosome causes color deficiency. A noncolor-deficient woman (whose father is color deficient) marries a color-deficient man. What is the chance that their son will be color deficient?

A)  0%

B)  25%

C)  50%

D)  75%

E)  100%

 

 

46) Hemophilia is a sex-linked recessive gene that causes a blood disorder. What are the chances that the daughter of a normal man and a heterozygous woman will have hemophilia?

A)  0%

B)  25%

C)  50%

D)  75%

E)  100%

 

 

47) A recessive allele on the X chromosome causes color deficiency. A color-deficient boy has a mother with normal vision and a color-deficient father. From which parent did he get the color-deficiency gene?

A)  Father

B)  Mother

C)  Either mother or father

 

 

48) A man who carries a harmful sex-linked (on the X chromosome) gene will pass the gene on to

A)  all of his daughters.

B)  half of his daughters.

C)  half of his sons.

D)  all of his sons.

E)  all of his sons and daughters.

 

49) Color deficiency is more common in men than in women because

A)  men have only one X chromosome.

B)  the gene is located on the Y chromosome.

C)  women cannot inherit the gene from their fathers.

D)  crossing over occurs only in women.

E)  men get more copies of the gene than do women.

 

 

50) An individual who is a carrier for a sex-linked trait such as hemophilia

A)  is always male.

B)  is homozygous for the recessive condition.

C)  shows the dominant phenotype.

D)  cannot pass the gene on to his or her daughters.

 

 

 

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