Which Statement Best Describes a Valid Gene-Environment Interaction on Behavior

Multiple Choice

Which statement best describes a valid gene-environment interaction on behavior?

A) Identical twins adopted by different families often display behaviors typical of their adoptive families.
B) In rats, littermates reared by mothers of different strains display the same exploratory behavior as their biological siblings.
C) Two people with the same phenotype may not share the same genotype.
D) Shrews raised in a lab without their mother fail to nurture their young.