Quote:
Originally Posted by Kazikli Bey
That's entirely my point, it means that a certain selection of our ancestors had to be omnivores, or at the very least, suited to be omnivores, in order to survive and be termed 'the fittest' when they dropped down from the trees. Our genes don't change in order to adapt, and our genes are what determine us, now a genetic mutation may help but i consider that an anomaly, or else it means that we could all be descended from one person, like blue-eyed people.
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I'm not sure I see the problem. It wouldn't be necessary for any proto-human to be instantly all-omnivorous; only that those with a certain gene mutation would be getting better nutrition from the diet available to them by their circumstances. Darwinian selction then progressively weeds out those without. It doesn't have to be just one single gene - there may be a whole bunch that combine to determine digestion. Plus there's the presence of microbes in the gut of course. And to change diet it needs, I guess, not only digestion to change but also taste. So I think gradual shift is plausible.