castanyes blaves

Random ramblings about some random stuff, and things; but more stuff than things -- all in a mesmerizing and kaleidoscopic soapbox-like flow of words.

9/08/2008

 

Indels and mutation

Single-nucleotide mutation rate increases close to insertions/deletions in eukaryotes : Abstract : Nature
Single-nucleotide mutation rate increases close to insertions/deletions in eukaryotes

Very simple but elegant analysis. They used different alignment programs to check for errors, and the plots show distances from 0 to 25bp and 0 to 50bp. Say an indel is at 12bp of a mismatch: are we properly aligning the sequences? Would PRANK give different results on a set of human-chimp-orang-macaque multiple alignments compared to the pairwise alignments methods used in the paper? The results indicate that this is not a recombination effect. That's interesting. There is a pile of papers out there that relate polymorphism (and divergence?) to recombination rates. Not exactly contradictory, but interesting to see the difference in results.

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