For most living things, sexual reproduction has proven the best ... There are, however, rare examples of asexual species that reproduce by cloning. Each offspring is genetically identical to ...

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

Those outlier liaisons gave whiptails robust heterozygosity, which has been preserved by the identical replication—essentially, cloning—that occurs in asexual reproduction. It’s a genetic ...

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

Animals that rely exclusively on parthenogenesis to reproduce, like the flowerpot snake, are called obligate parthenogens, ...

The Amazon molly (Poecilia formosa) is a species of freshwater fish native to Mexico and the southwestern United States. The fish—like their namesake, the mythical Amazonian warriors—are all female.

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 ...