Thursday, August 18, 2011

Need help with biology homework?

A dominant allele is responsible for the wild type body color (gray) of drosophila; its recessive allele produces black body color(b). A testcross of a wild type female gave 52 black and 58 wild type in the F1(1-subscript). If the wild type females are crossed to their black F1 brothers (yuck!), what genotypic and phenotypic ratios would be expected in the F2?

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