In some very rare cases, animal species reproduce via parthenogenesis exclusively. One such species is the desert grassland whiptail lizard, all of which are female.
\nThe ability to reproduce asexually allows animals to pass on their genes without spending energy finding a mate, and so can help sustain a species in challenging conditions. If a Komodo dragon arrives on an uninhabited island, for example, she alone could create a population through parthenogenesis.
\nHowever, because every individual would be genetically identical, Komodo dragon mothers and their daughters would be more vulnerable to disease and environmental changes than a genetically-varied group.<\/p>\n","protected":false},"excerpt":{"rendered":"
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