Problem: In drosophila, the genes for aristaless antenna (A = normal, a = aristaless) and held-out wings (H = normal, h = held-out) are both on chromosome 2 and only 4 m.u. apart.
If you cross flies with the genotype Ah/aH and aH/Ah, what are the chances the offspring will be ah/ah?
Clearly show your work.
Please explain with lots of details.