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#13 - martycamp
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(02/24/2013) [-]
There's something slightly off. When it goes back to single celled organisms, it wouldn't be a sperm and an egg coming together. Not to mention the odds of specific single celled organisms engulfed other ones. For example, the mitochondria used to be its own organism. That's why there's still DNA in them, but it's only inherited through the mother. I have no idea how much this skews them numbers.