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In Drosophila melanogaster, the recessive X-linked alleles white (w), miniature (m) and forked (f) give the...

In Drosophila melanogaster, the recessive X-linked alleles white (w), miniature (m) and forked (f) give the phenotypes white eyes, miniature wings and forked brushes. The recombination between the w and m loci is 35%, and between the m and f loci, 20%. Wild-type males were crossed with females from a strain that was homozygous recessive for the three alleles, then the F1 flies were sibling mated. What phenotype frequencies are expected in F2 a) if there is no interference, and b) if c = 0.3?

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Answer #1

Answer has been attached as image below.

In first image I have mentioned answer for both of condition followed by seprate attached images explanation for both of the conditions.

Hope this will help. Although I have double checked the calculations please check once again.

In case of interference the number of expected double crossovers is modified .3× 7 = 2.1%  and the number of other expected phenotypes are modified accordingly.

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