So, I'm doing some drosophila experiments with my high schoolers and I had really poor production of wild type individuals for doing the experiment resulting in not enough to cross with everyone... I am trying the following crosses and hoping the kids can still learn from it, but wanted input from any fly-herders on what I can expect with the first two crosses....
Sepia males x White Eye females
Sepia females x White Eye males
Dumpy males x Wild-type females
Dumpy females x Wild-type males
I don't think the gender separation will make any difference except in the white x sepia crosses since it is X-linked. What should I get in the sepia x white crosses? Since they both control eye color and are both recessive I'm not sure. Am I correct that w is epistatic, thus should block sepia in an x-linked manner (same as if I had used wild-type instead of sepia)? I assume the Dumpy x Wild-type will go by the books (F1 all wild-type with F2 3:1 ratio). Fingers crossed.