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DNA barcodes and genetic diversity in humans
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[QUOTE="jim mcnamara, post: 6004577, member: 35824"] Very short and general precis: Analyzing the 'barcode' gene in [URL="https://www.physicsforums.com/insights/when-did-mitochondria-evolve/"]mitochondria[/URL] (big data source) has found that most current animal species have comparatively tiny genetic diversity, humans included. Based on the data, the conclusion is modern human genetic diversity is low, and modern humans as a species are about 200,000 years old. The same holds true for many of the other animal species in the database, 200,000 years. Comment: hmmm. If this study holds water it means that most of the extant animals and early humans all underwent some kind of evolutionary change 200,000ya. This is sure to arouse lots of skepticism. Background: [URL]https://en.wikipedia.org/wiki/DNA_barcoding[/URL] Popular Science: [URL]https://phys.org/news/2018-05-special-humanity-tiny-dna-differences.html[/URL] Paper: "Why should [URL="https://www.physicsforums.com/insights/when-did-mitochondria-evolve/"]mitochondria[/URL] define species?" [I]Human Evolution[/I] [URL='http://dx.doi.org/10.14673/HE2018121037']DOI: 10.14673/HE2018121037[/URL] [COLOR=#ff0000 ]This DOI link is broken for now. I cannot get to the original. Expect it will be fixed shortly.[/COLOR] [/QUOTE]
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DNA barcodes and genetic diversity in humans
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