Patch type nucleotide sequence identities between genomes from many different species facilitate illegitimate recombination.

Kolmogorov–Smirnov tests 28 comparing the observed run-length distributions to their geometric expectation were highly significant (D = 0.52–0.59, p = 10− 3 –10− 5 ), demonstrating that the contiguous match structure of real alignments departs sharply from random expectations even when compositional bias is preserved.

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