Instructions

. The Fringe mutation in Drosophila causes the wings to be frayed on the edges. This mutation is due to a chromosome deletion on the X chromosome that covers the region that also contains the white locus. Remember, the white locus is an X-linked recessive eye color mutation (wild type eye color is red). The Fringe mutation is lethal in the homozygous or hemizygous conditions. Give the phenotypes and proportion of progeny produced in the following crosses. A. Red-eyed, Fringe female is crossed with a white-eyed male. B. White-eyed, Fringe female is crossed with a red-eyed male. C. White-eyed, Fringe female is crossed with a white-eyed male.

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