Question

The heritability of intelligence is highest among select one:

a. genetically similar individuals who have been raised in similar environments.
b. genetically different individuals who have been raised in similar environments.
c. genetically different individuals who have been raised in different environments.
d. genetically similar individuals who have been raised in different environments.

Answer 1

The correct answer is a: genetically similar individuals who have been raised in similar environments.
For example, monozygotic twins, who share 100% of their DNA that grew up in the same home have the highest correlation of their IQs (correlation is 0.86).