<span>Many traits require the concerted action of multiple genetic loci, often in combination with the environment.</span>
Answer:
The one major change that occurred was the placement and organization of the electron.
So base on the question that states and ask to give the name of one cell type that continues to divide throughout a person's lifetime and also on who does not, with that question, the cell that divide through persons lifetime is a Mitosis or skin cells, an example to this is the skin, and the who doesn't divide is i think the brain cells, it doesn't regenerate