«We were able to show by live cell imaging that polarization of the cell occurs after fertilization of the egg cell, and both MTs and F - actin play a role in inducing asymmetric cell division to form the plant's body axis,» says Ueda. (sciencedaily.com)
Soon after the conception, the zygote (product of fertilization of egg with sperm) undergoes rapid divisions. (mommyedition.com)
The second question has in fact two facets: (a) how does it arise in the development of the individual organism during the process of growth from the moment of fertilization of the egg; and (b) how does the egg itself come to get that way — that is to say, how can we conceive of evolution as having «designed» the cell? (religion-online.org)