Chromosomes; chromosomes can mutate during the creation of the next generation with semen and the egg.
I think the correct answer from the choices listed above is the first option. Regulatory proteins of the cell cycle help maintain homeostasis by controlling <span>the cycle by signaling the cell to either or delay the next phase of the cycle. Hope this answers the question.</span>
Right upper is the location for the duodenum
If i remember correctly it sends signals to your brain. hope that helps if not im sorry