At the neolithic period, collective burial-sites were common. In these deposits, we can observe a breakdown of bodies according to age and sex. The nature of this selection is completely unknown. It is a cultural or a family-based selection? We decided to approach this problem by doing a genetic study of the skeletons of the collective deposit of Condé-sur-Ifs (7,000 years B.P., Calvados, France). The study based on the variability of the mitochondrial DNA control region shows that the five individuals studied have all different mitochondrial types. Thus, a familial relationship between these individuals (on a maternal lineage) can be excluded.
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