When true breeding red tulips are crossed with true breeding white tulips, the progeny have pink flowers. This is an example of
A) incomplete dominance.
B) codominance.
C) pleiotropy.
D) epistasis.
E) norm of reaction.

Question

Quizplus · Accepted Answer

This is an example of incomplete dominance, where the phenotype of the heterozygote (pink flowers) is intermediate between the phenotypes of the two homozygotes (red and white flowers).

When True Breeding Red Tulips Are Crossed with True Breeding