Wild type fruit flies have grey bodies and straight wings. Yellow bodies and curly wings are both recessive phenotypes. The body color gene is X-linked; the wild type allele is designated Xx+. The wing shape gene is autosomal; the wild type allele is designated C+. You cross a pure breeding yellow-bodied, curly-winged female with a grey-bodied, straight-winged male to produce an F1 generation. Use this information to answer questions X-Y below. 20) You cross two F1 flies to produce an F2 generation. What proportion of the F2 female flies are expected to have curly wings and yellow bodies? a) 1/16 b) 1/4 c) 1/8 d) 3/8 e) 3/16

Human Anatomy & Physiology (11th Edition)
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Wild type fruit flies have grey bodies and straight wings. Yellow bodies and curly wings are both
recessive phenotypes. The body color gene is X-linked; the wild type allele is designated XY+. The
wing shape gene is autosomal; the wild type allele is designated C+. You cross a pure breeding
yellow-bodied, curly-winged female with a grey-bodied, straight-winged male to produce an F1
generation. Use this information to answer questions X-Y below.
20) You cross two F1 flies to produce an F2 generation. What proportion of the F2 female flies are
expected to have curly wings and yellow bodies?
a) 1/16
b) 1/4
c) 1/8
d) 3/8
e) 3/16
Transcribed Image Text:Wild type fruit flies have grey bodies and straight wings. Yellow bodies and curly wings are both recessive phenotypes. The body color gene is X-linked; the wild type allele is designated XY+. The wing shape gene is autosomal; the wild type allele is designated C+. You cross a pure breeding yellow-bodied, curly-winged female with a grey-bodied, straight-winged male to produce an F1 generation. Use this information to answer questions X-Y below. 20) You cross two F1 flies to produce an F2 generation. What proportion of the F2 female flies are expected to have curly wings and yellow bodies? a) 1/16 b) 1/4 c) 1/8 d) 3/8 e) 3/16
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