Most evidence about heritability in humans comes from studies of

A) twins and differences among cultures.
B) twins and adopted children.
C) adopted children and cohort differences.
D) cohort differences and differences among cultures.

Heritability

A measure of how much of the variation in a trait among individuals within a population can be attributed to genetic differences.

Twins

Two individuals born from the same pregnancy, who can be either identical (from one egg) or fraternal (from two different eggs).

Adopted Children

Children who have been legally taken and raised by parents who are not their biological parents.