Question

What is the chance that a heterozygou s female and a white-eyed male will have a white-eyed male offspring?

Answer 1

Answer: p= 0.25

Step-by-step explanation:

Assumptions

white eyes are recessive, single gene, not sex-linked

cross is

Ww x ww —> Ww, ww p(ww) = 0.5

XX x XY —> XX, XY p(XY) = 0.5

p(XYww) = 0.25

If the white eye gene is sex-linked, the cross is

XXWw x XYw-

XW Xw x Xw Y- —> XXWw, XYW-, XXww, XYw-, p(XYw-) = 0.25