Parthenogenesis

A form of reproduction where an egg develops without the fusion of sperm with the egg cell. Parthenogenesis occurs commonly among insects and other arthropods. Artificially inducing parthenogenesis with human eggs may be a means to isolate stem cells from an embryo, without fertilization.

Artificial activation of an egg in the absence of a sperm; the egg is "tricked" into behaving as if it has been fertilized.

Production of an embryo from an unfertilized egg.