RESEARCH ARTICLE Hunting for the LCT-13910ÃT Allele between the Middle Neolithic and the Middle Ages Suggests Its Absence in Dairying LBK People Entering the Kuyavia Region in the 8th Millennium BP Henryk W. Witas1*, Tomasz Płoszaj1, Krystyna Jędrychowska-Dańska1, Piotr J. Witas2, Alicja Masłowska1, Blandyna Jerszyńska3, Tomasz Kozłowski4, Grzegorz Osipowicz5 1 Department of Molecular Biology, Medical University of Łódź, Łódź, Poland, 2 Institute of Physics, Nicolaus Copernicus University, Toruń, Poland, 3 Department of Anthropology, Adam Mickiewicz University, Poznań, Poland, 4 Department of Anthropology, Nicolaus Copernicus University, Toruń, Poland, 5 Department of Archaeology, Nicolaus Copernicus University, Toruń, Poland *
[email protected] OPEN ACCESS Citation: Witas HW, Płoszaj T, Jędrychowska- Abstract Dańska K, Witas PJ, Masłowska A, Jerszyńska B, et à al. (2015) Hunting for the LCT-13910 T Allele Populations from two medieval sites in Central Poland, Stary Brześć Kujawski-4 (SBK-4) between the Middle Neolithic and the Middle Ages and Gruczno, represented high level of lactase persistence (LP) as followed by the LCT- Suggests Its Absence in Dairying LBK People * ’ Entering the Kuyavia Region in the 8th Millennium 13910 T allele s presence (0.86 and 0.82, respectively). It was twice as high as in contem- BP. PLoS ONE 10(4): e0122384. doi:10.1371/journal. poraneous Cedynia (0.4) and Śródka (0.43), both located outside the region, higher than in pone.0122384 modern inhabitants of Poland (0.51) and almost as high as in modern Swedish population Academic Editor: Arnar Palsson, University of (0.9). In an attempt to explain the observed differences its frequency changes in time were Iceland, ICELAND followed between the Middle Neolithic and the Late Middle Ages in successive dairying pop- Received: August 3, 2014 ulations on a relatively small area (radius *60km) containing the two sites.