The part of the CNS that is responsible for these functions is the brain stem.
The brain stem is the part of the brain that control very basic functions of your organism and lets them work together as they should. The other parts that are mentioned all have much more specific and also different roles.
Answer:
Mutation rate is not a difference between a population showing exponential growth and a population showing logistic growth. Hope this helped :D
The answer would be , the sum of all genetic traits in a population’s individuals at any given time