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You are a researcher who is interested in the linkage of three genes in drosophila: The...

You are a researcher who is interested in the linkage of three genes in drosophila: The "a" gene, the "b" gene and the "c" gene. You think the genes may be linked, so you decide to do a cross using a true-breeding a+/b+/c+ fly and an a/b/c fly. The F1 generation is all a+/b+/c+. However, when the F1 generation is bred to a true-breeding a/b/c fly, it yields the following offspring: 389 a+/b+/c+ ; 403 a/b/c ; 183 a+/b/c ; 176 a/b+/c+ ; 92 a/b+/c ; 95 a+/b/c+ ; 4 a+/b+/c ; 6 a/b/c+. Which of these linked genes is in the middle of the three?

Group of answer choices

gene c

gene a

gene b

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