If you could ever have the chance to save a parent would you choose Mother or Father i would choose Father because my mom isn't that nice

I would give my life in exchange for both of theirs.

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !