Question

please help, will fan and give medal!

Answer 1

A man and woman have a son who is color blind, a recessive sex-linked trait carried on the X-chromosome, but neither parent is color blind. The woman is now pregnant with their second child. Which of the following statements is true about the second child?

A daughter will be color blind because the father is a carrier of the recessive allele.

A son will be color blind because the mother is a carrier of the recessive allele.

A daughter will not be color blind because the father is not a carrier of the recessive allele.

A son will be color blind because the father’s mother must have been a carrier for recessive allele.

Answer 2

@kmullis6 What answer choice do you think it is?

Answer 3

I really don't know. But because neither parent had it, I'd go with D.

Answer 4

Yea i was kinda thinking the same thing but i was also thinking c to its like a fifty fifty!

Answer 5

Wait, x means only male right?

Answer 6

no Males are XY and Females are XX. C:

Answer 7

oh ok, thanks. (:

Answer 8

yep np :D

Answer 9

That's correct. color blindness is something carried on the X chromosome. Since the father does not have it, no girl will possibly carry this disease.