Question

Which of the studies below provide evidence linking genes and behavior? (Check all that apply)

A. Fruit flies that are mutant for the gene period have impaired circadian rhytms.

B. A strain of weave mice, with a mutation in a potassium channel, have a severe ataxic gait.

C. Mice mutant for the gene sonic hedgehog have dramatic facial structure abnormalities.

D. Two lines of mice were created by repeatedly selecting for high or low anxiety. After multiple generation, the high linewas reliably more anxious than the low line.

E. Twin studies comparing monozygotic and dizygotic twins have found significant heritability for aggression.