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In the euchromatic regions, yeah, it's about that. Elsewhere (e.g. centromeres) we are all quite diverse. This is recent news due to long read sequencing and complete genome assembly. The human pangenome project is touching on this, if still reticent to make clear claims about the centromeres.

I'm not sure that "99%" similar is the right way to think about chimpanzees and humans. We have a different chromosome number. Our chromosome 2 is a roberstonian fusion of two acrocentric chromosomes found in all other great apes, including chimpanzees and bonobos.

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