Sentences with word «petrous»

The new samples include, to our knowledge, the first genome - wide ancient DNA from Anatolian Neolithic farmers, whose genetic material we obtained by extracting from petrous bones, and who we show were members of the population that was the source of Europe's first farmers.

Optimal ancient DNA yields from the inner ear part of the human petrous bone.

The authors specifically asked their colleagues to make available the inner ear petrous bones because they're especially rich in prehistoric genetic material.

Remarkably, the petrous bone, a thick area behind the ear known for its preservation of DNA, is intact.

These forces also cause the brain to move in a swirling fashion and contact the inner prominence of the skull, particularly the petrous and orbital ridges and the wings of the sphenoid.

Recently, they discovered that DNA preserves best — with up to 100 times higher recovery rates — in the petrous bone.

Advances in extracting DNA from a tiny ear bone called the petrous allowed a team led by Iosif Lazaridis and David Reich, population geneticists at Harvard Medical School in Boston, Massachusetts, to analyse the genomes of the 44 Middle Eastern individuals, who lived between 14,000 and 3,500 years ago.

«DNA gets degrades very quickly in tropical climates, however we found that in the very dense inner ear bone, called the petrous bone, DNA is well preserved even under such adverse environmental conditions for thousands of years,» says Cosimo Posth, doctoral student at the Max Planck Institute for the Science of Human History in Jena.

The researchers analyzed the petrous bone of the inner ear, which can sometimes preserve more DNA than other bones.

The petrous bone is a thick part of the temporal bone at the base of the skull, just behind the ear.

The denser the bone, the more likely you are to find DNA that's been protected from degradation, so teeth are often used, but we found an even better bone — the petrous.»

Now, with hundreds of thousands of ancient skeletons (and their petrous bones) still to be analyzed, the field of ancient DNA is poised to both pin down current questions and tackle new ones.

His group showed that the petrous bone, containing the tiny inner ear, harbors 100 times more DNA than other ancient human remains, offering a huge increase in the amount of genetic material available for analysis.

The difficult - to - obtain ancient DNA was extracted from a tiny ear bone — called the petrous — by a team led by Losif Lazaridis and David Reich, two population geneticists at Harvard Medical school.

Three researchers wrote in to the journal Nature suggesting that anyone with a secret stash of ancient human bones — especially the petrous bone of the inner ear — should make them available to the scientific community at large for study.

The letter authors suggest that petrous bones be stored in an equal - opportunity holding facility in Israel that was established earlier this year.

Each semicircular canal consists of a toroidal bony passage within the petrous portion of the temporal bone and contains an endolymph - filled duct.