In a Drosophila Cross,you Mate a Parental Line Displaying Crossed

Multiple Choice

In a Drosophila cross,you mate a parental line displaying crossed eyes (recessive trait,autosomal) and corkscrew bristles (recessive trait,autosomal) by a wild-type fly.The sites of the two genes are known to be unlinked.The F₁ flies are wild type.

You self the F₁ flies in the hope of regenerating the cross-eyed/corkscrew phenotype.

How many individual F₂ flies would you need to analyze to have 95% confidence of finding at least one cross-eyed/corkscrew fly?

A) 16 flies
B) 8 flies
C) 32 flies
D) 47 flies
E) 216 flies