Question

45 multiple choice 2 points a female with color blindness has a daughter who is color blind. what is the daughters genotype for the color - blind gene? the daughter had a mutation after birth. the daughter is homozygous for the color blindness gene. the daughter is heterozygous for the color blindness gene. the daughter is a carrier of the color blindness gene.

Explanation:

Color - blindness is an X - linked recessive trait. For a female to be color - blind, she must have two copies of the recessive color - blindness allele (homozygous recessive). A heterozygous female is a carrier and not color - blind, and a carrier does not have the full - blown color - blindness phenotype. A mutation after birth is not relevant to the basic genetic determination of being color - blind.

Answer:

The daughter is homozygous for the color blindness gene.