The genes responsible for the red eye color and gray body color in Drosophila are dominant.

The genes responsible for the red eye color and gray body color in Drosophila are dominant. As a result of crossing the red-eyed gray Drosophila with the cherry-eyed gray Drosophila, 75% of the red-eyed gray and 25% of the red-eyed black fruit fly were obtained. What are the genotypes of parents and offspring?

M – red
m – cherry
T – gray
t – black
R: MMTt * mmTt
gametes: MT MT; mt mt
F1: MMTT (red heterozygous, gray homozygous); MMTt (red heterozygous, gray heterozygous); MMTt (red heterozygous, gray heterozygous); Mmtt (red heterozygous; black homozygous)
Parent genotypes: MMTt (red, gray); mmTt (cherry, gray).