Question

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.)dominant epistasis
	b.)	mutation
		c.)complementation/phenotypically identical genes
		d.)suppression
		e.)recessive epistasis