Do you have to a male and female fertile egg?

In order for a fertilized egg to develop into a new organism, it must be a zygote. A zygote is formed by the union of two gametes: a sperm and an egg. In most sexually reproducing species, the sperm and egg are produced by separate individuals, one male and one female.

However, in some species, such as certain plants, the same individual can produce both sperm and eggs, meaning a single individual can fertilize itself without needing to find and mate with another individual.