If genetic contribution to variation in a trait is negligible:
A)identical twins will be more similar to one another than fraternal twins are to one another.
B)fraternal twins will be more similar to one another than identical twins are to one another.
C)identical twins will be no more similar to one another than are fraternal twins.
D)identical twins will be resemble one another more closely than do any other siblings.
E)None of the answer options is correct.

Question

Quizplus · Accepted Answer

If genetic contribution is negligible, then both identical and fraternal twins will have the same chance of inheriting the trait. Therefore, identical twins will be no more similar to one another than fraternal twins, and there will be no significant difference between the two.

If Genetic Contribution to Variation in a Trait Is Negligible