Samwik. Sorry about lack of reply on other thread. I've been busy this weekend. In a hurry now too. We have 40,000 genes, Sam, not 40. Possibly more. Technically Y-chromosome and mtDNA are not genes but they act like them in many ways. I agree:
"a 0.1% adaptive advantage can spread to 95% of the population after about 100 generations; and a 0.5% advantage takes only 20 generations to spread like that."
I suspect there was quite a bit of migration as humans in different regions developed new ways to exploit the environment. It's accepted Y-chromosome and mtDNA distribution reflects this. Your other question concerns ecological speciation and I'll deal with it on the other thread. Thanks for your questions. It forces me to think about my own ideas. Hybrid vigour?
Last edited by terrytnewzealand; 05/12/07 08:49 PM.
