The answer is (b.) fertilization
The fertilization is the stage where the egg cell or the
so-called ovum fused with the sperm cell which eventually leads the development
of the embryo or the zygote. The Embryogenesis starts when the zygote undergoes
mitotic divisions or also known cleavage process.
Nucleus has genetic material (DNA) inside it, so it commands the cell about how it has to be function......
Answer:
Exothermic because it doesn't take place inside something, rather on the outside. :)
