In Drosophilia, two red-eyed, long winged flies are mated and produce the following offspring.
Females Males
red-eyes, long-wings ¾ 3/8
red-eyes, short wings ¼ 1/8
white-eyes, long-wings 0 3/8
white-eyes, short-wings 0 1/8
What is the genetic basis for each of these traits? What are the genotypes of the parents?