When gray flies were crossed, 1392 gray flies and 467 black flies appeared in the offspring

When gray flies were crossed, 1392 gray flies and 467 black flies appeared in the offspring, which trait is dominant? determine the genotypes of the parents.

Black is the dominant feature, since it is more common, gray is recessive.

1392 refers to 467 as approximately 3 to 1. This ratio only occurs with heterozygous parents.

Let’s check by solving the problem:

R: Aa x Aa – heterozygous parents

G: A, a x A, a – 2 gametes from each parent

F1: AA – black, Aa – black, Aa – black, aa – gray.

Conclusion: 75% – black, 25% – gray.