Question

Red-green colorblindness is a sex-linked, recessively inherited condition where affected individuals cannot distinguish between red and green colors very easily. It is carried as a recessive trait on the X chromosome. If a female carrier has children with an unaffected male, which statement correctly describes the children that are born to this couple?A)All of the sons would be colorblind and all of the daughters would be carriers.B)None of the sons would be colorblind and half of the daughters would be carriers.C)Half of the sons would be colorblind and all of the daughters would be carriers. The other offspring would be unaffected.D)Half of the sons would be colorblind and half of the daughters would be carriers. The other offspring would be unaffected.

Answer 1

answer and explanation

If the mother is a carrier hen she has one recessive allele and one dominant allele. and the father is unaffected then the X chromosome has a dominant allele only and the y chromosome does not carry any allele

therefore half of the sons would be color blind and half the daughters would be color blind.

option D is correct