Some of the Most Recent Research Studies Regarding Genetic Vs

Some of the most recent research studies regarding genetic vs.environmental causes of disorders in animals and humans have suggested

A) genetic influences are greater than originally observed because positive environmental conditions do not prevent disorders.
B) genetics and the environment share equal roles in the development of all psychological disorders.
C) the relative contributions of genetics and the environment in the development of psychological disorders are different for lower animals than for humans.
D) genetic influences may have been overstated by previous studies, i.e., without sufficient environmental stress, the genetic predisposition may never be activated.