They are coded in our parent's c<span>hromosomes which contains DNA, our heriditary material</span>
Through nerves attached to the brain and to the spinal cord. When an action potential traveling down the axon reaches a terminal button, they secrete a chemical called a neurotransmitter.
The brain communicates with the rest of the body through the spinal cord, which runs from the base of the brain all the way down the back. The spinal cord is made up of lots of nerves, and these nerves branch out into more nerves that travel to every part of the body.
<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
Genotype is not the only thing that effect phenotype because you have environment effects as well that can cause a vary of things.....
Hello Littlefoot2645. I do believe the answer would be that of the process of "mutation," thus it occurs by human interference, specifically, although, initially, naturally-speaking, only occurring by natural selection in onslaught of period time frames.