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Barcelona, Spain

Halima A.B.,University of Monastir | Bahri R.,University of Monastir | Esteban E.,Seccio dAntropologia | Moral P.,Seccio dAntropologia | Chaabani H.,University of Monastir
International Journal of Human Genetics | Year: 2015

The Rhesus (Rh) blood group system is one of the most highly polymorphic genetic systems used in the investigation of human genetic relationships. In this paper the researchers aimed to expand the determination of the Rh haplotype frequencies in new samples from North African populations providing comparative analyses within and between these populations. A total of 771 blood samples were collected from three North African countries. Results reveal a general genetic homogeneity between North African populations when samples representative of wide areas were considered, regardless of their current linguistic status. However a significant micro-differentiation could be noted when small areas were considered. North African populations would possess a low ancient genetic sub-Saharan component. Analyses of the Rh haplotype frequency variation showed that worldwide populations represent a network of genetic relationships having adequate statistics and a general correspondence with geography coupled to historical patterns of gene flow and genetic drift influence. © Kamla-Raj 2015. Source

Nova Delgado M.,Seccio dAntropologia | Gamarra B.,Seccio dAntropologia | Nadal J.,University of Barcelona | Olesti O.,Autonomous University of Barcelona | And 4 more authors.
Folia Primatologica | Year: 2014

Morphometric variation of biological structures has been widely used to determine taxonomic affinities among taxa, and teeth are especially informative for both deep phylogenetic relationships and specific ecological signals. We report 2-dimensional geometric morphometrics (GM) analyses of occlusal crown surfaces of lower molars (M1, n = 141; M2, n = 158) of cercopithecoid primate species. A 12-landmark configuration, including cusp tips and 8 points of the molar crown contour, were used to evaluate patterns of variation in lower molar shape among cercopithecoid primates and to predict the taxonomic attribution of 2 archaeological macaques from Roman time periods. The results showed that the lower molar shape of cercopithecoid primates reflects taxonomic affinities, mostly at a subfamily level and close to a tribe level. Thus, the cusp positions and crown contour were important elements of the pattern related to interspecific variation. Additionally, the archaeological specimens, attributed to Macaca sylvanus based on osteological information, were classified using the GM molar shape variability of the cercopithecoid primates studied. The results suggest that their molar shape resembled both M. sylvanus and M. nemestrina, and species attribution varied depending on the comparative sample used. © 2015 S. Karger AG, Basel. Source

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