In Drosophila,h Determines Hairy Body (H⁺ = Smooth)and Se Determines

Essay

In Drosophila,h determines hairy body (h⁺ = smooth)and se determines sepia eyes (se⁺ = red).The loci are approximately 40 m.u.apart on an autosome.A cross was made: se h⁺/se h⁺ X se⁺h/se⁺h,and the F₁ were all wild type.F₁ females were testcrossed to se h/se h males and the offspring were:
39 sepia eyes.
42 hairy body. a)What progeny and in what proportions were expected?
b)Provide an explanation of the observed results if they differ from expectations.