• MonkderVierte@lemmy.ml
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    19 hours ago

    minor mutations that would only provide an advantage in extreme specific scenarios … wouldn’t have a chance to be spread.

    Most north europeans can digest lactose.

    • zalgotext@sh.itjust.works
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      17 hours ago

      North Europe is a frozen wasteland where nothing grows for like a third of the year, being able to digest lactose in those months is hugely advantageous. I don’t think “winter” counts as an “extreme specific scenario”

    • Demdaru@lemmy.world
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      18 hours ago

      Black death IIRC. Milk was one of few easily availabke foods when farmers died off. So, extremely specific scenario.