• @[email protected]
    link
    fedilink
    English
    1
    edit-2
    7 days 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.

    • @[email protected]
      link
      fedilink
      English
      37 days ago

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

    • @[email protected]
      link
      fedilink
      English
      37 days 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”