Actually ignore that persons answer its open ocean. im only telling you because its in my text book for penn foster hopefully you didnt get it wrong!
Answer: Nervous
Explanation: It's the nervous system
Answer:
Gene duplication can provide new genetic material for mutation, drift and selection to act upon, the result of which is specialized or new gene functions. Without gene duplication the plasticity of a genome or species in adapting to changing environments would be severely limited.
Answer:
Damage to the nerve cells without myelin sneath is permenent because the regeneration of nerve cells can only happen when schwann is present!
Hope this helps please give me brainliest!
God bless :)