It is difficult to calculate the heritability of traits that
A) develop later in adulthood.
B) do not vary across people.
C) are highly affected by one's environment.
D) are highly affected by one's genes.

Question

Quizplus · Accepted Answer

Heritability measures the proportion of variation in a trait due to genetic differences. If a trait does not vary across people, there is no variation to attribute to genetic differences, making heritability calculation impossible.

It Is Difficult to Calculate the Heritability of Traits That