The trait of cream-colored eyes in Drosophila is an example of ________.
A) simple recessive alleles
B) incomplete penetrance of red eyes
C) a gene modifier effect in eye color
D) gene dosage
E) a spontaneous mutation

Question

Quizplus · Accepted Answer

The cream-colored eyes in Drosophila are due to a gene modifier effect, where other genes modify the expression of the primary eye color gene.

The Trait of Cream-Colored Eyes in Drosophila Is an Example