Admixture and Sexual Bias in the Population Settlement of La
AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 136:100–107 (2008) Admixture and Sexual Bias in the Population Settlement of La Re´ union Island (Indian Ocean) Gemma Berniell-Lee,1 Ste´ phanie Plaza,2 Elena Bosch,1,3 Francesc Calafell,1,3 Eric Jourdan,4 Maya Ce´ sari,5 Ge´ rard Lefranc,6 and David Comas1,3* 1Unitat de Biologia Evolutiva, Departament de Cie`ncies Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain 2Servei de Geno`mica., Departament de Cie`ncies Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain 3CIBER Epidemiologı´a y Salud Pu´ blica (CIBERESP), Spain 4De´partement d’He´matologie Clinique et Oncologie Me´dicale, Groupe Hospitalo-Universitaire Caremeau, 30029 Nıˆmes, France 5UFR de Biologie, Universite´ de La Re´union, 97715 Saint-Denis, Messag. Cedex 9 – Re´union, France DOM 6Institut de Ge´ne´tique Humaine, UPR CNRS 1142, et Universite´ Montpellier II, 34095 Montpellier Cedex 5, France KEY WORDS mixed ancestry; asymmetrical gene flow; mtDNA; Y chromosome; founder effects ABSTRACT La Re´union, one of the three Mascarene further 18 STRs and 35 SNPs on the Y chromosome in islands located in the Indian Ocean, remained devoid of 26 of these samples. Our results show that there was a inhabitants until it was first colonized by the French in strong sexual bias (asymmetrical gene flow) in the peo- the middle of the 17th century. The continuous flow of pling of La Re´union, where admixture events were foreign-born slaves and immigrant workers from Africa, mainly between male settlers and females from the India, Southeast Asia, and China to work on coffee and incoming slave groups.
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