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Orcas are first non-humans whose evolution is driven by culture
You could call it a culture shock. Many researchers accept that cultural experiences have helped shape human evolution – and evidence has now emerged that the same may be true of killer whales. Human genomes have evolved in response to our cultural behaviours: a classic example is the way that some human populations gained genes for lactose tolerance following the onset of dairy farming.
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https://www.newscientist.com
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Fascinating stuff, the discoveries of natures secrets just keeps coming. Orcas are majestic animals and highly intelligent. There is no reason to believe that humans are the only cultured species(obviously funghi)