Genetics Help!!!!! F2 Cross....?

Question

If i have a homozygous wild-type female for both wings and body (XW XW, XB XB) crossed with a homozygous male with cut wings and a banded body (XwY, XbY) producing all normal wild-type males and females in the F1, how can i get a female with wild-type wings and a banded body in the F2 generation?

Hmm.. yeah thats what I thought... I'm guessing this question is a typo. Thanks!

Answer 1

The F1 females will have XW Xw XB Xb.
The F1 males will have XWY XBY.

An F2 female with wild type wings and banded body must have
XW X? Xb Xb where the ? means it could be either allele.

If banded body is recessive, the F2 female can't have a banded body because there's no F1 male to pass on the banded allele. The F1 females do have the banded allele, but the F2 females would have to get that allele from both of the F1 flies.