222k views
16 votes
Female with normal color vision with a father who is colorblind

User Regmagik
by
5.8k points

2 Answers

8 votes
What? I don’t understand. But color loss is from staring into the sun.
User Schweerelos
by
5.5k points
12 votes

I don't really know what this question is asking but I'm just gonna list what I know...

Colour blindness is an X-linked recessive disorder. This means that the father's genotype will be
X^(x) Y while the daughter's genotype will be
X^(X) X^(x) as she will automatically receive the recessive allele from dad and the fact that she isn't colourblind means that she received the dominant allele from mom.

If this woman is married to a man with with a genotype of
X^(X) Y, then there is a 50/50 chance that a boy will be colourblind and no chance that a girl will be colourblind but there is a 50/50 chance that she will be a carrier.

If married to a man with a genotype of
X^(x) Y, then there is a 50/50 chance that a boy will be colourblind, and a 50/50 chance that a girl will be colourblind but there is a 50/50 chance that she will be a carrier.

User Funnydman
by
5.5k points