HAPLOTYPE IN A HAYSTACK

In the February 25 Issue:

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View Larger Version | Personal genomics companies read only a tiny portion of a person’s genome. But it’s a telling portion, with efforts focused on identifying SNPs and haplotypes. SNPs are spots in the DNA where one person has a different chemical letter than another. Certain congregations of SNPs are flags for haplotypes, which are patterns of genetic variation found in different populations. Credit: Reprinted by permission from MacMillan Publishers Ltd; Nature, International HapMap Consortium, 2003

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