11/03/2010 11:18 am ET Updated May 25, 2011

Snake Gives 'Virgin Birth,' Parthenogenesis, Twice To Extraordinary Babies With Unique Genetic Make-Up

A female boa constrictor snake has given birth to two litters of extraordinary offspring.

Evidence suggests the mother snake has had multiple virgin births, producing 22 baby snakes that have no father.

More than that, the genetic make-up of the baby snakes is unlike any previously recorded among vertebrates, the group which includes almost all animals with a backbone.

Details are published in the Royal Society journal Biology Letters.

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