This article is awesome. It has listed different animals (with their cute pictures) that have virgin birth; that is, females produce females, without involvement of males. The interesting part, and very relevant to our Christmas (!) holidays, is that this ability might be triggered in a new environment. For instance, in a zoo in the UK, a female lizard that reproduces sexually in the wild, shockingly, got pregnant without any contact with a male (from the same species, at least!). Hmmm... Did Charlotte Gilman know about this?!
http://news.sciencemag.org/sciencenow/2012/12/slideshow-virgin-birth-not-so-mi.html?ref=em
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