Human chimp increase in segmental duplications

Our results suggest that the evolutionary properties of copy-number mutation differ significantly from other forms of genetic mutation and, in contrast to the hominid slowdown of single-base-pair mutations, there has been a genomic burst of duplication activity at this period during human evolution.

This is a paper on increased rates of segmental duplications along the lineage to human and chimp.
This should have some implications for pseudogene numbers between organisms.

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