These types of bears interbred above we thought, ways DNA out of a beneficial 115,000-year-dated jawbone.
Boffins keeps removed DNA from a 115,000-year-dated polar happen jawbone and you will used it to analyze the new hereditary matchmaking ranging from these Snowy predators and their brown happen cousins (grizzlies provided). They found that polar bears intermixed that have brown bears somewhat a great piece across the millennia.
Polar incur fossils are unusual, and many ones that are discover is actually relatively younger. But boffins got fortunate just more than about ten years ago, when a 130,000-to-115,000-year-dated polar happen jawbone is actually receive inside Svalbard .
New current class put a special, even more over genome obtained from you to old bear’s white teeth, and you will compared they to the genomes out-of 64 modern polar and you can brown contains. Their studies are published recently throughout the Proceedings of one’s Federal Academy off Sciences. (more…)