Question

launchpad A Drosophila mutation called singed (s) causes the bristles to be bent and misshapen. A mutation called purple (p) causes the fly’s eyes to be purple in color instead of the normal red. Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes. The F1 were intercrossed to produce the F2, and the following results were obtained. What are the genotypes of the parental flies in Cross 1

Answer 1

ppss and PPSS

Step-by-step explanation:

Just as indicated in the question above, Flies homozygous for singed and purple were crossed with flies that were homozygous for normal bristles and red eyes.

And a Drosophila mutation called singed (s) causes the bristles to be bent and misshapen.

A mutation called purple (p) causes the fly’s eyes to be purple in color instead of the normal red.

Thus, the genotypes of the parental flies in Cross 1 are

PPSS and ppss