Our vast, shared family tree.

gcbias

You might not like to admit it, but you’re related to me.

It’s very unlikely that you’re my sibling (I’m not even sure if my family read these posts). You’re one of over seven billion people alive today, and I have only one sister, so the chance that you as a random person are my sibling is < 1 in a billion. You’re not my first cousin, because (as far as I know) I dont have any first cousins. But further back than that it all starts it go a bit hazy. I have eight great-grandparents and I vaguely know their names and know some of their descendants, I’m guessing you’re not one of them (I met some of my 2nd cousins once at a Christmas long ago). But how far do I have to go back till I find I’m related to you? I have sixteen great-great grandparents, I…

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Author: Shane O'Mara

Neuroscientist

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