Rosy Coloured Eyes and Forked Bristles Are Unlinked,recessive Traits in Drosophila.A

question 9

Multiple Choice

Rosy coloured eyes and forked bristles are unlinked,recessive traits in Drosophila.A rosy-eyed Drosophila with wild-type bristles was crossed with a forked Drosophila with wild-type eyes.All of the F₁ were phenotypically wild-type for both traits,whereas the F₂ consisted of 306 wild-type,94 rosy-eyed,102 fork-bristled,and 33 forked-bristled and rosy-eyed flies.Infer the genotypes of the parents.

• A) rrff,RRFF
• B) Rrff,rrFf
• C) RRFF,RRFF
• D) rrff,rrff
• E) RRff,rrFF

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