In a cross between homozygous wild-type drosophila and yellow-bodied males of all of the F1's were phenotypically wild-type. the F2 generation (resulting from matings of the F1's) had 356 wild-type offspring. however, all 240 females were wild-type and of the 239 males, 116 were wild-type and 123 were yellow-bodied. how is the yellow-bodied trait inherited?

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Biology

Sidney Floyd

26 July, 23:07

In a cross between homozygous wild-type drosophila and yellow-bodied males of all of the F1's were phenotypically wild-type. the F2 generation (resulting from matings of the F1's) had 356 wild-type offspring. however, all 240 females were wild-type and of the 239 males, 116 were wild-type and 123 were yellow-bodied. how is the yellow-bodied trait inherited?

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Sincere Mullen · Answer 1

The trait is inherited via sex linkage, with the gene being located on the X chromosome. Since all females were wild type, it suggests the wild type allele is dominant, and since the yellow body was only observed in males, it confirms its sex-linked as the gene is on the X-chromosome.