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Message: <blockquote data-quote="imhotep" data-source="post: 28485912" data-attributes="member: 562115">The main differences are NOT the percentages at all. In contrast to Great Apes, who have 48 chromosomes (eg chimpanzee, gorilla, and orangutan) modern humans and Neandertals, Denisovans have and had, respectively, 46 chromosomes. The reduction in chromosome number was caused by the head-to-head fusion of two ancestral chromosomes to form human chromosome 2 (HSA2). Sequences that once resided near the ends of the ancestral chromosomes are now interstitially located in 2q13–2q14.1.This is the single cause that led to the separation of the human species from the great apes.</blockquote>

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