Suppose That the Heritability Coefficient of Intelligence Is Roughly 0

Suppose that the heritability coefficient of intelligence is roughly 0.5.This means that:

A) 50% of intelligence is due to genetics,and 50% is due to environmental factors.
B) 50% of intelligence is due to genetics,and 50% is due to unspecified factors.
C) intelligence is completely determined by genes in 50% of the population.
D) about 50% of the variability in intelligence scores can be explained by genetic differences.

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