Gorilla Genome Is Bad News for Evolution: In a significant number of cases, evolutionary trees based on DNA sequences show that humans are more closely related to gorillas or orangutans than chimpanzees—again, all depending on which DNA fragment is used for the analysis. The overall outcome is that no clear path of common ancestry between humans and various primates exists, so no coherent model of primate evolution can be achieved. The recent release of the gorilla genome spectacularly highlights this evolutionary quandary. According to the Nature study, "in 30% of the genome, gorilla is closer to human or chimpanzee than the latter are to each other."
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