If the Correlation on a Trait Were

Multiple Choice

If the correlation on a trait were .75 for identical twins, .55 for siblings, .23 for cousins, and .11 for genetically unrelated adopted siblings, one could conclude that

A) heredity plays no role in that trait.
B) environment plays no role in that trait.
C) heredity is a prime contributor to that trait, but environment also plays a role.
D) environment is the prime contributor to that trait, with heredity making only a minor contribution.