Additional file 1.
A table of the lactase persistence phenotype frequencies. Columns show location (continent, country, longitude and latitude), population group, number of individuals tested, frequency of lactase persistent individuals, LP test method, and the primary source reference. The Americas were excluded from the table due to paucity of data. Other reasons for data exclusion were: recent immigrant populations, children (under 12 years old), or biased individuals selection criteria (such as individuals reported being lactase non persistent or related individuals). Wherever only country name was available, location was determined by the capital city or the estimated central point of the country.
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Itan et al. BMC Evolutionary Biology 2010 10:36 doi:10.1186/1471-2148-10-36