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Birds Do It. Bees Do It. Dragons Don’t Need To.

But these eggs — two of which hatched a few weeks ago — were unusual: they developed from a female that had had no male of the species in close proximity for more than a decade. Judging from similar occurrences over the past two years in Britain, it appears that these lizards sometimes use a form of virgin birth in which eggs hatch without conception. The embryos are genetic clones of the mother.