The Heritability Coefficient for Smoking Is Around

Multiple Choice

The heritability coefficient for smoking is around + .50 in a particular group. This means that

A) the observed variation in smoking is equally due to both genes and the environment
B) the observed variation in smoking is due mostly to genes
C) the observed variation in smoking is due mostly to the environment
D) smoking is genetically inherited
E) there was little variation in smoking within the group