Question

1. In the vinegar fly, Drosophila melanogaster, the gray body color dominates over the black. By crossing two gray flies, 152 gray and 48 black flies were obtained. Indicates reasonably what the genotype and phenotype of the parents are.

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Corbin

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In this instance, it is likely that both parent flies are heterozygous for the body color gene. This means they each carry one dominant gray allele (G) and one recessive black allele (g).
The genotype of the parents could be Gg (gray body color), producing a phenotypic ratio of 3:1 among their offspring.

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