I refuse to believe that rainbows are the result of light refracting through air-borne water droplets.
Is this the thread where be refuse to believe facts just because?
Somebody Else's Problem wrote:
Well no, I'm not a geneticist. And I don't think there'll be adequate DNA evidence from 40,000 years ago to make such a comparison in the first place.
See: Neanderthal Genome Project
Alvin Flummux wrote:
Harry Bizzle wrote:
I've read that lactose tolerance developed within the last 10,000 years or so.
Interesting, I'd like to know more about this.
Unsurprising, considering the Neolithic Revolution occurred around 10,000 years ago. Up until that point, lactase production stopped once individuals surpassed the weaning age and were no longer drinking milk. Domestication of cattle, goats and camels allowed neolithic humans to continue to drink milk without having to suck on their mothers teats their entire lives. So lactase (the enzyme that breaks lactose into glucose and galactose) production continued into adulthood. Lactose intolerance by population of people correlates with the access to domesticated mammals that neolithic humans living in that area had.