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Estimating the age of the so-called "mitochondrial Eve" (i.e. the most recent common ancestor, MRCA, regarding mtDNA) is a very complex issue, exactly for the difficulty in correctly estimating the mutation rate. So, it is not so easy to disproof the estimate, but at the same time there aren't particular reasons to choose that (and not the several ...


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The Jane Goodall website says: "You’ll rarely see a chimp paddling about in the water as they don’t like to swim. Their low body fat ratio causes them to sink and their top heavy body composition makes it difficult for them to keep their heads above water. However, some chimpanzees do enjoy a good splash around in shallow water." Some monkeys have ...


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