Immaculate Conception In a Boa Constrictor

crudmonkey writes "Researchers have discovered a biological shocker: female boa constrictors are capable of giving birth asexually. But the surprise doesn't end there. The study in Biology Letters found that boa babies produced through this asexual reproduction — also known as parthenogenesis — sport a chromosomal oddity that researchers thought was impossible in reptiles. While researchers admit that the female in the study may have been a genetic freak, they say the findings should press researchers to re-think reptile reproduction. Virgin birth among reptiles, especially primitive ones like boas, they argue may be far commoner than ever expected."

Comments

Makes founder events more likely.

[RyanFenton]

Interesting tidbit: The vast majority of known snake species are capable of swimming. Get a snake washed out to sea, let it drift between islands on flotsam, and with this mutation, a lone female is suddenly capable of being the foundation of a new population in a new ecosystem.

While not advantageous to individuals, this female-only birth trait would be a powerful force in mass extinction events, as it leads to a diverse set of multiply adaptive groups being formed, each specialized in a different direction for a different ecosystem niche. If a meteor equivalent hits, and all the rules of living change to some degree, you have a greater chance of having some in the right niche to survive.

The downside is if female-only births become too common, you stand a chance of losing genetic diversity in the smaller groups - so it being in the background like this, only occasionally popping up makes sense for a species that might have gained benefit from it in more ancient life cycles.

Ryan Fenton

Re:Not immaculate conception

[sznupi]

Snakes are probably the best candidate you can find, for an animal that does have it. A bit more deserving than newborns actually, don't you think?