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Geographic Patterns of (Genetic, Morphologic, Linguistic) Variation: How Barriers Can Be Detected by Using Monmonier's Algorithm
To provide a more realistic representation of the barriers in a genetic landscape, the software a significance test by means of bootstrap matrices analysis is implemented and the noise associated with genetic markers can be visualized on a geographic map and the areas where genetic barriers are more robust can be identified.
Estimating Y chromosome specific microsatellite mutation frequencies using deep rooting pedigrees.
- E. Heyer, J. Puymirat, P. Dieltjes, E. Bakker, P. de Knijff
- BiologyHuman molecular genetics
- 1 May 1997
Estimates suggest that microsatellites on the Y chromosome have mutation frequencies comparable to those on the autosomes, which supports the hypothesis that slippage-generated growth is the driving force behind the microsatellite variability.
Genomic evidence for the Pleistocene and recent population history of Native Americans
The results suggest that there has been gene flow between some Native Americans from both North and South America and groups related to East Asians and Australo-Melanesians, the latter possibly through an East Asian route that might have included ancestors of modern Aleutian Islanders.
Genetic and demographic implications of the Bantu expansion: insights from human paternal lineages.
A recent origin for most paternal lineages in west Central African populations most likely resulting from the expansion of Bantu-speaking farmers that erased the more ancient Y-chromosome diversity found in this area, and the intriguing presence of paternal lineage belonging to Eurasian haplogroup R1b1*, which might represent footprints of demographic expansions in central Africa not directly related to the BantU expansion.
137 ancient human genomes from across the Eurasian steppes
The genomes of 137 ancient and 502 modern human genomes illuminate the population history of the Eurasian steppes after the Bronze Age and document the replacement of Indo-European speakers of West Eurasian ancestry by Turkic-speaking groups of East Asian ancestry.
Inferring the Demographic History of African Farmers and Pygmy Hunter–Gatherers Using a Multilocus Resequencing Data Set
The branching history of Pygmy hunter–gatherers and agricultural populations from Africa and estimated separation times and gene flow between these populations are studied to increase knowledge of the history of the peopling of the African continent in a region lacking archaeological data.
Phylogenetic and familial estimates of mitochondrial substitution rates: study of control region mutations in deep-rooting pedigrees.
- E. Heyer, E. Ziętkiewicz, A. Rochowski, V. Yotova, J. Puymirat, D. Labuda
- BiologyAmerican journal of human genetics
- 1 November 2001
The results reconcile the controversial rate estimates in the phylogenetic and familial studies; the fast sites prevail in the latter, whereas the slow and moderate sites dominate the phylogenetics-rate estimations.
Variation in Rural African Gut Microbiota Is Strongly Correlated with Colonization by Entamoeba and Subsistence
A significant relationship between a common human parasite (Entamoeba) and gut bacterial community composition is shown, suggesting potential important interactions between the immune system, gut bacteria, and gut parasites, highlighting the need for more hierarchical cross population studies that include parasitism as potential factor influencing gut microbiota dynamics.
Dispersals and genetic adaptation of Bantu-speaking populations in Africa and North America
The analysis of the genetic diversity of Bantu speakers revealed adaptive introgression of genes that likely originated in other African populations, including specific immune-related genes, and applied this information to African Americans suggests that gene flow from Africa into the Americas was more complex than previously thought.
Maternal traces of deep common ancestry and asymmetric gene flow between Pygmy hunter–gatherers and Bantu-speaking farmers
- L. Quintana-Murci, Hélène Quach, D. Behar
- BiologyProceedings of the National Academy of Sciences
- 5 February 2008
Analysis of mtDNA variation in 1,404 individuals from 20 farming populations and 9 Pygmy populations from Central Africa revealed that this region was colonized gradually, with an initial L1c-rich ancestral population ultimately giving rise to current-day farmers and Pygmies, in whom L1 c1a is the only surviving clade.