
(A) Distributions of lengths and occurrences of human specific (HS) indels in different genomic regions. (B) Indel rate distributions of three kinds of indels: (1) indels retrieved from human–chimpanzee pairwise comparison, (2) indels retrieved from multiple sequence alignments (sequences from human, chimpanzee, and at least one species of mouse, rat, and dog), and (3) HS indels in different genomic regions. Note that category 3 indels are not considered here.











