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File:Shared IBS tracts within bottlenecked populations.png

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English: Shared IBS tracts within bottlenecked populations. Each colored spectrum in Figure A was generated by using MS (Hudson R (2002)) to simulate 4.8 * 1010 base pairs of pairwise alignment. Both sequences are derived from the population depicted in Figure B that underwent a bottleneck from size N0 = 10,000 to size Nb, the duration of the bottleneck being Nb/2 generations. 1,000 generations ago, the population recovered to size 10,000. These bottlenecks leave similar frequencies of very long and very short IBS tracts because they have identical ratios of strength to duration, but they leave different signature increases compared to the no-bottleneck history in the abundance of 104–105-base IBS tracts. In grey are the expected IBS tract spectra that we predict analytically for each simulated history.
Date Published: June 6, 2013
Source Harris K, Nielsen R (2013) Inferring Demographic History from a Spectrum of Shared Haplotype Lengths. PLoS Genet 9(6): e1003521. doi:10.1371/journal.pgen.1003521 http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1003521
Author Kelley Harris , Rasmus Nielsen
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An eight base-pair tract of IBS
Spectra of IBS sharing between simulated populations
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