Answer to Question #110043 in Genetics for Kim

Question

Hi everyone, Could someone help me to determine the genotype if dad is colorblind, what is his daughter's genotype? is it XbX?

Answer 1

So, if dad is colorblind, his genotype - X^bY. If mother's genotype is unknown, then we have 3 possible crossbreeding:

• P: ♀X^BX^B x ♂X^bY

F₁: ♀X^BX^b : ♂X^BY

• P: ♀X^BX^b x ♂X^bY

F₁: ♀X^BX^b : ♀X^bX^b : ♂X^BY : ♂X^bY

• P: ♀X^bX^b x ♂X^bY

F₁: ♀X^bX^b : ♂X^bY

Thus the daughter's genotype can be X^BX^b or X^bX^b.