n Hermann Muller's experiment with Drosophila (flies), he found that if he irradiated the parents with X-rays their offspring had variegated patterns in their eyes: some areas were red while others were white. A) What were the X rays doing to the D

The x-rays mutated the genes that control eye pattern

Explanation:

One of the ways by which variation is introduced into a population is by genetic mutation.

When Hermann Muller irradiated the Drosophila (flies) with x-rays, genetic mutation occurred specifically in the genes that control eye pattern. This caused some offspring to have variegated patterns in their eyes: some areas were red while others were white.

Note that genetic mutation may affect both the genotype and phenotype of offsprings