In evolutionary terms women who didn't immediately fall in love with conquerors and gladly have their children were dead ends. Women who did, weren't. Place your bets on the behavior of women descended from that selective filter.
It's not one data point. It's *everywhere* where the ancient genome gets sequenced.
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Now you sound like the IQ deniers. You don't need to find the specific genes for a behavior to identify a filter for it - humans have bred horses for speed without sequencing the horse genome.
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with enough time for mutations, phenotypes can and do resurface after being filtered out.
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