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Locknuts on 20 February 2018
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the-pi-guy said:
Locknuts said:

Come on. We aren't even close to understanding the human genome. It's in this ambiguity that people insert their ideology. 

Did you know that you share 50% of your genes with a banana? Slight variations to the frequency of alleles in the genome can produce different results. My point is that in 50,000 years, significant changes have taken place. Not in percentage terms of what we understand of the human genome, but in obvious, observable, testable reality.

We don't know what everything in our genome does, we have a pretty good idea of the differences though.  

There's a large number of things that cause evolutionary differences.  It's not just about time.  

50,000 years is not a ridiculously long time.  Crocodiles haven't changed that much in 65 million years, and you're acting like it's obvious that 50,000 years should have caused lots of huge differences.  The reality is that's not the case, because 1000x longer hasn't been long enough to change crocodiles much at all.  Genetically the tiny differences are what cause the phenome differences.  

There's a variety of things that speed up and slow down how much divergence there is.  Natural selection, genetic drift, and many others.  

Yep, like the freezing cold that humans managed to migrate to. Those without the intelligence to survive simply perished and that kind of intelligence became a desirable trait for the females.

Also, post industrial revolution, the ability to work a repetitive 8 hour work day (not a natural human trait) was a desirable trait as those who couldn't either run a business or work a full work day didn't get paid.

I believe (and there is some evidence to support this) these things accelerated the differences so that great changes happened over a relatively short period of time.