Tuesday, September 20, 2011

Who Needs Males?

It's almost like something out of Jurassic Park: female guppies don't need males to reproduce.

Actually, it's not quite as exciting as sex changing. Apparently the female guppies are able to store male sperm for months after mating, before producing offspring. So males are needed somewhere along the line; the point is merely that releasing a lone female could ultimately end up resulting in a whole new colony of fish.

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