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E.g., 11/24/2017
E.g., 11/24/2017
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Your search has returned 509 articles:
  • Rethink

    Bones show Dolly’s arthritis was normal for a sheep her age

    In the scientific version of her obituary, Dolly the Sheep was reported to have suffered from severe arthritis in her knees. The finding and Dolly’s early death from an infection led many researchers to think that cloning might cause animals to age prematurely.

    But new X-rays of Dolly’s skeleton and those of other cloned sheep and Dolly’s  naturally conceived daughter Bonnie indicate...

    11/23/2017 - 09:00 Genetics, Animals
  • News

    Current CRISPR gene drives are too strong for outdoor use, studies warn

    Gene-editing tools heralded as hope for fighting invader rats, malarial mosquitoes and other scourges may be too powerful to use in their current form, two new papers warn.

    Standard forms of CRISPR gene drives, as the tools are called, can make tweaked DNA race through a population so easily that a small number of stray animals or plants could spread it to new territory, predicts a...

    11/16/2017 - 15:00 Genetics, Conservation
  • Feature

    How Asian nomadic herders built new Bronze Age cultures

    Nomadic herders living on western Asia’s hilly grasslands made a couple of big moves east and west around 5,000 years ago. These were not typical, back-and-forth treks from one seasonal grazing spot to another. These people blazed new trails.

    A technological revolution had transformed travel for ancient herders around that time. Of course they couldn’t make online hotel reservations....

    11/15/2017 - 12:00 Archaeology, Anthropology, Genetics
  • News

    Ancient European farmers and foragers hooked up big time

    Thousands of years ago, hunter-gatherers native to Europe and incoming farmers from what’s now Turkey got up close and personal for a surprisingly long time, researchers say. This mixing reshaped the continent’s genetic profile differently from one region to another.

    Ancient DNA from foragers and farmers in eastern, central and western Europe indicates that they increasingly mated with...

    11/10/2017 - 07:00 Anthropology, Archaeology, Genetics
  • News

    Scientists replaced 80 percent of a ‘butterfly’ boy’s skin

    In a last-ditch effort to save a dying 7-year-old boy, scientists have used stem cells and gene therapy to replace about 80 percent of his skin.

    This procedure’s success demonstrates that the combination therapy may be effective against some rare genetic skin disorders. The study also sheds light on how the skin replenishes itself, researchers report November 8 in Nature.

    In 2015,...

    11/08/2017 - 13:35 Genetics, Cells, Biomedicine
  • It's Alive

    Here’s why some water striders have fans on their legs

    For an animal already amazing enough to walk on water, what could growing feather fans on its legs possibly add?

    These fans have preoccupied Abderrahman Khila of the University of Lyon in France, who keeps some 30 species of bugs called water striders walking the tanks in his lab without getting their long, elegant legs wet.

    “Walk” may be too humdrum a word. The 2,200 or so known...

    11/03/2017 - 14:30 Animals, Evolution, Genetics
  • News

    No more than 800 orangutans from this newly identified species remain

    Orangutans living in forested foothills on the Indonesian island of Sumatra represent a previously unknown species, researchers say.

    Skeletal and genetic evidence puts these apes on a separate evolutionary trajectory from other orangutans in Sumatra (Pongo abelii) and Bornean orangutans (Pongo pygmaeus), says a team led by evolutionary anthropologist Michael Krützen of the University of...

    11/02/2017 - 12:00 Animals, Genetics, Evolution
  • News

    New CRISPR gene editors can fix RNA and DNA one typo at a time

    New gene-editing tools can correct typos that account for about half of disease-causing genetic spelling errors.

    Researchers have revamped the CRISPR/Cas9 gene editor so that it converts the DNA base adenine to guanine, biological chemist David Liu and colleagues report October 25 in Nature. In a separate study, published October 25 in Science, other researchers led by CRISPR pioneer...

    10/25/2017 - 13:00 Genetics, Health
  • News in Brief

    Inbreeding hurts the next generation’s reproductive success

    ORLANDO, Fla. — Kissing cousins aren’t doing their children any evolutionary favors, some preliminary data suggest.

    Mating with a close relative, known as inbreeding, reduces nonhuman animals’ evolutionary fitness — measured by the ability to produce offspring. Inbreeding, it turns out, also puts a hit on humans’ reproductive success, David Clark of the University of Edinburgh reported...

    10/23/2017 - 17:46 Genetics, Evolution
  • News in Brief

    Mating with Neandertals reintroduced ‘lost’ DNA into modern humans

    ORLANDO, Fla. — Interbreeding with Neandertals restored some genetic heirlooms that modern humans left behind in the ancient exodus from Africa, new research suggests.

    Those heirlooms are versions of genes, or alleles, that were present in humans’ and Neandertals’ shared ancestors. Neandertals carried many of those old alleles, passing them along generation after generation, while...

    10/23/2017 - 14:43 Genetics, Ancestry