4 ms·
> If it's so powerful, why did it not take over the rest of the world. Time. For going from 1/10 000 000 to 25% of the population in 300 generations (7500 year
by Rexxar 6y ago
> If it's so powerful, why did it not take over the rest of the world.
Time. For going from 1/10 000 000 to 25% of the population in 300 generations (7500 years), you need to have a gene that give you 5% more offsprings at each generation.
- iguy 6y agoAnd distance. Not so much gene flow across the Mediterranean until we got good at sailing. And climate. Milk was an advantage against other food sources available at the time in northern Europe, but this wasn't necessarily true elsewhere.
- restalis 6y agoClimate also reflects on the level of available grass that the herders had to take into account when deciding where to move. Europe receives smaller quantities of precipitation as one goes from west to east, and then Europe's lush vegetation transitions into steppes and harsher climate beyond Volga region (Europe-Asia border). It must have been a tough call to decide to go eastward, and from what history tells us, that herders chose to migrate westward, not the other way around.