Recent Research by Plomin (2006)suggests the Strongest Links Found Between $\frac{1}{2}$

Multiple Choice

Recent research by Plomin (2006) suggests the strongest links found between genes and intelligence were associated with:

A) 99 to 99.5% of the variation in intelligence
B) about 75% of the variation in intelligence
C) about 25% of the variation in intelligence
D) less than $\frac{1}{2}$ to 1% of the variation in intelligence