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According to the Genome News Network, about 90% of genome variation occurs as single nucleotide polymorphisms. dbSNP as of June 26, 2012 contains 187,852,828 SNP submissions (ss #'s) which condense to 53,558,214 familes (refSNPs, rs #'s).
Yesterday we looked at the generalized workflow for finding variants with NGS. Here is an image displaying SNPs and indels in IGV:
