Reproduction in animals varies from species to species. Some types of reproduction, like parthenogenesis, are more unusual ...

Additionally, many facultatively sexual animals alternate between sexual and asexual reproduction depending on environmental factors. For example, water fleas generally reproduce asexually unless ...

However, in the animal world there are many examples of “virgin” or asexual reproduction, in which only one individual, necessarily female, is involved to procreate another individual whose ...