What did scientists discover about somatic cells and why is this important for organ regrowth?

During the process of meiosis, special cells called gametes are formed. gametes only have half the number of chromosomes that the other cells in the body have. what form of reproduction do organisms that produce gametes use?

What is the next step in muscle contraction after the actin changes shape? (apex)

What causes darkening of the skin as melanin production increases