If dizygotic twins both share a trait 13% of the time while monozygotic twins share the trait 14% of the time,the heritability for this trait would be close to
A)0
B)0.13
C)0.14
D)0.135

Question

Quizplus · Accepted Answer

Heritability is a measure of how much of the variation in a trait can be attributed to genetic differences. In this case, since both dizygotic (fraternal) and monozygotic (identical) twins share the trait at almost the same rate (13% vs. 14%), it suggests that the variation in the trait is not significantly due to genetic differences but rather environmental factors or random variation. Therefore, the heritability of this trait would be close to 0.

If Dizygotic Twins Both Share a Trait 13% of the Time