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High frequency of lactose intolerance in a prehistoric hunter-gatherer population in northern Europe
Uppsala University.
Stockholm University.
Stockholm University.
Stockholm University.
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2010 (English)In: BMC EVOLUTIONARY BIOLOGY, ISSN 1471-2148, Vol. 10, no 89Article in journal (Refereed) Published
Abstract [en]

Background: Genes and culture are believed to interact, but it has been difficult to find direct evidence for the process. One candidate example that has been put forward is lactase persistence in adulthood, i.e. the ability to continue digesting the milk sugar lactose after childhood, facilitating the consumption of raw milk. This genetic trait is believed to have evolved within a short time period and to be related with the emergence of sedentary agriculture. Results: Here we investigate the frequency of an allele (-13910*T) associated with lactase persistence in a Neolithic Scandinavian population. From the 14 individuals originally examined, 10 yielded reliable results. We find that the T allele frequency was very low (5%) in this Middle Neolithic hunter-gatherer population, and that the frequency is dramatically different from the extant Swedish population (74%). Conclusions: We conclude that this difference in frequency could not have arisen by genetic drift and is either due to selection or, more likely, replacement of hunter-gatherer populations by sedentary agriculturalists.

Place, publisher, year, edition, pages
BioMed Central , 2010. Vol. 10, no 89
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-56459DOI: 10.1186/1471-2148-10-89ISI: 000277269900001OAI: diva2:319251
Original Publication: Helena Malmstrom, Anna Linderholm, Kerstin Liden, Jan Stora, Petra Molnar, Gunilla Holmlund, Mattias Jakobsson and Anders Gotherstrom, High frequency of lactose intolerance in a prehistoric hunter-gatherer population in northern Europe, 2010, BMC EVOLUTIONARY BIOLOGY, (10), 89, . Licensee: BioMed Central Available from: 2010-05-17 Created: 2010-05-17 Last updated: 2010-05-29

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