In purple people eaters, purple is dominant to white. A true-breeding white mutant is mated with a different true-breeding white mutant. All of the F₁ are purple. When the purple F₁ offspring mate with each other, their offspring occur in the ratio of 9 purple : 7 white. Which phenomenon explains the purple F₁ offspring? A) recessive epistasis B) dominant epistasis C) complementation D) mutation E) suppression

Question

Quizplus · Accepted Answer

The phenomenon of complementation explains the purple F1 offspring because the two different true-breeding white mutants have mutations in different genes, and when crossed, they complement each other to produce purple offspring.

In Purple People Eaters, Purple Is Dominant to White