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S.O.Y. Keita on POLYTOPICITY
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[QUOTE]Originally posted by DD'eDeN: [QB] Proto-Papuans branched northwards (at Euphrates?) from the proto-India/Andaman/Queensland pygmies who followed the Indian Ocean coasts. Some of these Proto-Papuans may have remained in Europe, while others met Denisovans and kept eastwardly to China coast and Mamanwa/Papua. - - - Convergent evolution commonly occurs in natural selection, 2 different types of animals that seem to become more similar with time due to influence of similar environment. Tasmanian wolf looked like European wolf, but was not at all closely related genetically, but both were carnivores that ate large prey. Tasmanian wolf and Papuan tree kangaroo both descend from a South American marsupial proto-opossum that coasted Antarctica to Australia-Papua before the big freeze-up there; New World monkeys and Cavy rodents may have done the same from Africa to South America. Convergence can be detected by examining the fossil chain, 2 taxa that start similar but with time diverge in form may be close genetic kin; 2 taxa that end similar but have dissimilar fossil forms have less close genetic kinship. [/QB][/QUOTE]
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