woolly
Washington (AFP) - About 52,000 years ago, the skinned hide of a Siberian woolly mammoth was exposed to conditions so frigid that it spontaneously freeze-dried, locking its DNA fragments into place. In a study published Thursday in the journal Cell, scientists reported using this remarkable sample to reconstruct the animal's genome in three dimensions -- a breakthrough that could yield important new insights about extinct species and even boost efforts to bring them back to life. Until now, ancient DNA specimens have only been found in short, scrambled fragments, severely limiting the amount o...
AFP
By Issam AHMED Washington (AFP) - Il y a 52.000 ans, la peau d'un mammouth laineux de Sibérie a été exposée à des conditions tellement glaciales qu'elle s'est spontanément lyophilisée, emprisonnant ses fragments d'ADN. Des scientifiques viennent désormais d'utiliser cet échantillon pour reconstruire le génome en trois dimensions de l'animal. Une avancée qui pourrait aider à mieux comprendre les espèces disparues, et même stimuler les efforts visant à les ramener à la vie. Jusqu'à présent, les spécimens d'ADN anciens retrouvés étaient généralement sous forme de fragments incomplets, limitant co...
AFP (Français)
Washington (AFP) - A little-known dog lineage with fur so thick it was spun into blankets was selectively bred for millennia by Native Americans of the Pacific Northwest until its rapid demise following European colonization, a study in Science showed Thursday. The new research was based on a genetic analysis of "Mutton," one of the last surviving Coast Salish woolly dogs whose pelt was sent to the nascent Smithsonian Institution in 1859, only to be largely forgotten until the early 2000s. Interviews contributed by Coast Salish tribal co-authors, meanwhile, revealed the dogs occupied a previou...
AFP
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