In the Development of the Cerebral Cortex​

Multiple Choice

In the development of the cerebral cortex​ 

A) intrinsic genetic factors control all differentiation. 
B) extrinsic inducing factors control all differentiation. 
C) a combination of intrinsic genetic factors and extrinsic inducing factors control differentiation. 
D) neither intrinsic genetic factors nor extrinsic inducing factors appear to play a role in differentiation.