![]() Later Early Neolithic genomes (7000 BP) were genetically similar to the Taforalt population, showing that the first stages of the Neolithic revolution in North Africa were driven by the acquisition of farming techniques by the local population and not by a population turnover 5. Their genome-wide ancestry is consistent with a substantial Eurasian origin, suggesting a Paleolithic back migration to Africa from Eurasia as proposed before 2, 3, 4. This autochthonous component descends from a population linked to the Upper Paleolithic population from Taforalt (present-day Morocco), dated to around 15,000 years before present (BP). The current North African genomic pool has been shaped by genetic influxes from sub-Saharan Africa, Europe, the Middle East, and the Caucasus into an autochthonous ancestral population 1. Due to the effect of the warm and humid climate on human remains, ancient DNA (aDNA) from the North African region has remained largely understudied only three prehistoric populations from the Upper Paleolithic to the Late Neolithic of the Western North African region have been reported so far (Fig. At the north, the Mediterranean Sea has been the center of the cultural and economic trade that shaped the history of the surrounding human populations. The Sinai Peninsula is a land bridge that supports migratory routes between the African continent and Eurasia. North Africa has a unique geographical situation that has favored demic diffusion between continents. ![]() Finally, consistent genetic differentiation between eastern and western islands points to a more complex colonization process than previously thought. While some island populations maintained relatively high genetic diversity, with the only detected bottleneck coinciding with the colonization time, other islands with fewer natural resources show the effects of insularity and isolation. ![]() The lack of gene flow between islands and constant or decreasing effective population sizes suggest that populations were isolated. Along with components already present in Moroccan Neolithic populations, the Canarian natives show signatures related to Bronze Age expansions in Eurasia and trans-Saharan migrations. We generate genome-wide data from 40 individuals from the seven islands, dated between the 3 rd–16 rd centuries CE. The indigenous population of the Canary Islands, which colonized the archipelago around the 3 rd century CE, provides both a window into the past of North Africa and a unique model to explore the effects of insularity. Nature Communications volume 14, Article number: 4641 ( 2023) The genomic history of the indigenous people of the Canary Islands
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |