Genetically speaking is it possible? I would like to know more about how dom/recess genes work with skin complexion as i’m just basing this question on the layman’s observation that interracial couples produce mixed childen whose skin complexion lies somewhere between the two.. This would also be assuming an idealistic future world society millions of years down the road whose moralities have progressed past all prejudice/racism/tribalism due to globalization/integration/social reform.
In: Biology
How much variety we have is a balance between selection pressure and intermixing.
When you have an isolated population (no intermixing) subject to strong selection pressure (like the freezing weather in northern Europe), that population adapts to those selection pressures (like getting white skin and growing more body hair). This results in more variety.
There’s not really any selection pressure anymore (at least for particular traits rather that just general health), as we have all sorts of technology and dominate our environment. There’s also a lot of mixing due to easy global travel and fewer people caring about interracial marriage. The variety we previously had tends to average out.
So yes – without any evolutionary force making us different, and with more mixing than any point in history, humans will continue to mix. Any scenario that changes this would not be good… Think apocalypse type stuff.
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