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Aux origines
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Aux origines de l'univers de la vie et de l'humanité...
Curated by
Jean-Philippe BOCQUENET
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Grâce à une vaste étude génomique menée en Afrique centrale sur des populations de chasseurs-cueilleurs pygmées et de villageois agriculteurs, des chercheurs de l'Institut Pasteur et du CNRS, en collaboration avec le Museum National d'Histoire Naturelle (France), l'université de Montréal (Québec) et l'université Lumière-Lyon 2 (France), remettent en cause l'impact de l'agriculture dans l'histoire néolithique africaine : elle ne serait en effet la cause directe ni du succès démographique des populations l'ayant adoptée, ni du fort brassage de ces dernières avec les populations pygmées. Les résultats de ces recherches sont publiés dans Nature Communications.
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Un crâne découvert à Kocabas en Turquie a été attribué à Homo erectus. Cet hominidé était donc déjà présent il y a 1,1 million d'années selon la datation...
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20% c'est le pourcentage d'ADN néandertalien que l'on retrouve dans la population Homo sapiens actuelle (hors Afrique) alors qu'individuellement ce pourcentage ne dépasse pas 3%...
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A substantial fraction of the Neanderthal genome persists in modern human populations. A new approach for analyzing whole-genome sequencing data from 665 people from Europe and East Asia shows that more than 20 percent of the Neanderthal genome survives in the DNA of this contemporary group. Significant amounts of population-level DNA sequences might be obtained from extinct groups even in the absence of fossilized remains, because these archaic sequences might have been inherited by other individuals from whom scientists can gather genomic data.
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Un foyer découvert dans la grotte de Qessem en Israël. Les traces dans les cendres du foyer montrent qu'il a été utilisé de manière répétée et a servi à cuire des morceaux de viandes. Cette partie est datée de - 300 000 ans. Préhistoire
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From
phys
A substantial fraction of the Neanderthal genome persists in modern human populations. A new approach applied to analyzing whole-genome sequencing data from 665 people from Europe and East Asia shows that more than 20 percent of the Neanderthal genome survives in the DNA of this contemporary group, ...
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Scientists have traced the steps of the human beings that inhabited the region during the Paleolithic era. Through computer programs for geographical analysis, it is known that these nomads gradually abandoned high-altitude rocky shelters and caves to live on flatter plains. To see or to be seen? This is the question that humans inhabiting the Cantabrian coast during the Paleolithic era had to ask themselves.
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The sizes of organisms following mass extinction events may vary more than previously thought, which may be inconsistent with the predictions of the so-called "Lilliput effect."
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Rascally rabbits digging burrows at Land’s End, England’s most westerly point, have inadvertently turned themselves into little Indiana Joneses, and uncovered 5000-year-old artefacts that could re-write British history.
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From
phys
Scientists at the Cantabria International Institute for Prehistoric Research have traced the steps of the human beings that inhabited the region during the Palaeolithic era. Through computer programmes for geographical analysis, it is known that these nomads gradually abandoned high-altitude rocky shelters ...
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Remnants of Neanderthal DNA in modern humans are associated with genes affecting type 2 diabetes, Crohn's disease, lupus, biliary cirrhosis and smoking behavior. They also concentrate in genes that influence skin and hair characteristics. At the same time, Neanderthal DNA is conspicuously low in regions of the X chromosome and testes-specific genes.
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From
phys
Remnants of Neanderthal DNA in modern humans are associated with genes affecting type 2 diabetes, Crohn's disease, lupus, biliary cirrhosis and smoking behavior. They also concentrate in genes that influence skin and hair characteristics. At the same time, Neanderthal DNA is conspicuously low in regions ...
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Inundated areas ofd the coast of Southern Sweden reveal a remarkable opportunity to explore a well preserved Mesolithic landscape.
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