Question

A certain type of congenital deafness in humans is caused by a rare autosomal recessive gene. In a

mating involving a deaf man and a deaf woman, could some of the children have normal hearing?
A) No, because the parents would teach their children sign language.
B) Yes, because it's rare.
C) No, traits get passed down from father to child and the father is deaf.
D) Yes, because traits assort independently.
E) No, since the gene in question is recessive, both of the parents are homozygous and one
would not expect normal hearing in the offspring.

Answer 1

No, since the gene in question is recessive, both of the parents are homozygous and one would not expect normal hearing in the offspring.

Step-by-step explanation:

The correct answer is option E) No, since the gene in question is recessive, both of the parents are homozygous and one would not expect normal hearing in the offspring.

When a certain type of congenital deafness in humans is caused by a rare autosomal recessive gene, it means that the deafness is only expressed when an individual has two copies (homozygous) of the recessive gene.

In the case of mating involving a deaf man and a deaf woman, both parents would carry two copies of the deafness gene (homozygous), and therefore all of their children would also inherit two copies of the gene, resulting in congenital deafness in all the offspring.