When identical twins differ in phenotype of a complex trait, it is almost always due to:
A)mutation.
B)segregation.
C)epistasis.
D)genotype-by-environment interaction.
E)the environment.

Name: When identical twins differ in phenotype of a complex trait, it is almost always due to: A)mutation. B)segregation. C)epistasis. D)genotype-by-environment interaction. E)the environment.
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Question

Quizplus · Accepted Answer

Identical twins have the same genotype, so if they differ in phenotype, it must be due to the environment.

When Identical Twins Differ in Phenotype of a Complex Trait