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Tag Archives: DNA

DNA study sheds new light on people in Neolithic battle ax culture

Credit: Uppsala University In an interdisciplinary study published in Proceedings of the Royal Society B an international research team has combined archaeological, genetic and stable isotope data to understand the demographic processes associated with the legendary Battle Ax Culture and its introduction are connected in Scandinavia. In 1953, when building a roundabout in Linköping, an important tomb of the ax …

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The US government plans to collect DNA from detained immigrants

Because genetic material contains family ties, data collection would have implications not only for those in custody, but also for their family members, who may be US citizens or legitimate residents. Domestic security officials said the new initiative was allowed under the 2005 DNA Fingerprinting Act. So far, immigrants have been exempted from the law by agreement between Eric H. …

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DNA is held together by hydrophobic forces

In order for DNA to be read, replicated or repaired, DNA molecules must open. This happens when the cells use a catalytic protein to create a hydrophobic environment around the molecule. Picture credits: Yen Strandqvist / Chalmers University of Technology Researchers at the Chalmers University of Technology in Sweden have refuted the prevailing theory of how DNA binds itself. It …

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Scientists have been wrong about DNA – it's actually held together by hydrophobic forces

In order for DNA to be read, replicated or repaired, DNA molecules must open themselves. This happens when the cells use a catalytic protein to create a hydrophobic environment around the molecule. Photo credits: Yen Strandqvist / Chalmers University of Technology Researchers at the Chalmers University of Technology, Sweden, refute the prevailing theory of how DNA binds itself. It is …

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The old DNA reveals the first look at the look of a Denisovan

Scientists have painted a portrait of a young woman who belonged to a mysterious, human-like population known as Denisovans 50,000 years ago. Here's the kicker: Only a handful of Denisovan fossils have found, including the little finger of the boy. So a team led by Evolutionary geneticists David Gokhman and Liran Carmel of the Hebrew University of Jerusalem reconstructed the …

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Police investigate Allean Logan's death 20 years after her disappearance; Body was identified by DNA match in 2019

Two decades ago, Allean Logan disappeared without a trace from her home in Washington, DC. Her newborn son was alone in the apartment, strapped on his child seat and drenched his diaper. "This has just devastated and shaken my family," said Allean's nephew Henderson Long to Dateline. "It was just so much pain and no answer." The 36-year-old mother of …

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DNA identifies suspects in 1972 killing 11-year-olds

"There are nightmares out of this crime, and no family should ever go through such a tragedy," said Eve Irvine, Torrance Police Chief, at a press conference. After decades of searching for the murderer, the investigators have turned to public DNA databases, the police said. In 2000, police submitted DNA evidence to Terris corpse to the sheriff's crime lab in …

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Fingerknochen point the way to reveal Denisovan DNA secrets

A Denisovan finger fossil reveals secrets about this extinct Stone Age race. A decade ago, scientists discovered fossils of a previously unknown group of ancient humans during the excavation of the Denisova Cave, an ancient archaeological site in southern Siberia. Nature reported in February of this year that DNA was found in a finger bone and that this remote shelter …

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The 17,000-year-old Puma Poo contains the oldest parasite DNA ever found

An adult cougar in Montana. A new study highlights the parasites that plagued his old brothers. Avalon / Universal Images Group on Getty Images Ancient animal excrement shares secrets about parasites and the animals that invaded them during the Ice Age. Scientists found in Puma fecal matter, whose radiocarbon-containing age is between 16,570 and 17,000 years, eggs of the parasite …

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