<span>Nervous tissue is specialised to react to stimulate and to conduct impulses to various organs in the body which bring about a response to the stimulus. Nerve tissue (as in the brain, spinal cord and peripheral nerves that branch throughout the body) are all made up of specialised nerve cells called neurons. Hope this helps! :D</span>
Answer:Human plasmid can mutate
Explanation:
Biologists do not fully understand DNA because there are constant changes and new discoveries developing.
There is no pigment in the brain, so it is in it's natural colour, grey.
