Study Biology

Question 9

(Multiple Choice)

In Drosophila melanogaster, vestigial short) wings vg) are caused by a recessive allele of a gene that independently assorts with a gene pair that influences body hair. Hairy h) results in a hairy body. A cross is made between a fly with normal wings and a hairy body and a fly with vestigial wings and a normal body. The phenotypically normal F1 flies were crossed among each other, and 1024 F2 flies were reared. What phenotypes would you expect in the F2, and in what actual numbers not ratios) would you expect to find them?


A) phenotypes-wild, vestigial, hairy, vestigial hairy; numbers expected-wild 256), vestigial 256), hairy 256), vestigial hairy 256)
B) phenotypes-hairy, vestigial hairy; numbers expected-hairy 512), vestigial hairy 512)
C) phenotypes-wild, vestigial; numbers expected-wild 576), vestigial 576)
D) phenotypes-all wild; numbers expected-wild 1024)
E) phenotypes-wild, vestigial, hairy, vestigial hairy; numbers expected-wild 576), vestigial 192), hairy 192), vestigial hairy 64)

Answer

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