A fruit fly homozygous for wild-type eyes and straight wings was crossed with a fly homozygous for rosy eyes and wrinkled wings. The progeny all showed wild-type eyes and straight wings

When crossing the F1, the resulting offspring showed 3 wild-type eyes/straight wings : 1 rosy eyes/wrinkled wings. This data suggest:

A. rosy eyes is dominant.
B. straight wings is recessive.
C. these two genes are linked.
D. these two genes are sex-linked.
E. these two genes are codominant.


C

Biology & Microbiology

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