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E.g., 12/17/2018
E.g., 12/17/2018
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  • Year in Review

    News of the first gene-edited babies ignited a firestorm

    A Chinese scientist surprised the world in late November by claiming he had created the first gene-edited babies, who at the time of the announcement were a few weeks old. Scientists and ethicists quickly responded with outrage.

    In an interview with the Associated Press and in a video posted November 25, Jiankui He announced that twin girls with a gene altered to reduce the risk of...

    12/17/2018 - 08:34 Genetics, Science & Society
  • Year in Review

    Crime solvers embraced genetic genealogy

    Every week, Ellen Greytak checks DNA profiles in a genealogy database. She’s not searching for long-lost relatives. She’s out to find family members of unknown assailants in rape and murder cases.

    Greytak is director of bioinformatics at Parabon NanoLabs in Reston, Va. Since May, the company has used genetic genealogy, a forensic technique for tracking down suspects through their...

    12/17/2018 - 08:32 Genetics, Science & Society
  • Year in Review

    Humans wiped out mosquitoes (in one small lab test)

    For the first time, humans have built a set of pushy, destructive genes that infiltrated small populations of mosquitoes and drove them to extinction.

    But before dancing sleeveless in the streets, let’s be clear. This extermination occurred in a lab in mosquito populations with less of the crazy genetic diversity that an extinction scheme would face in the wild. The new gene drive,...

    12/17/2018 - 08:26 Animals, Genetics, Health
  • News

    Big data reveals hints of how, when and where mental disorders start

    Psychiatric disorders’ many complexities have stymied scientists looking for clear genetic culprits. But a new giant dataset holds clues to how, when and where these brain disorders begin.

    Called PsychENCODE, the project’s first large data release has revealed intricate insights into the behavior of genes and the stretches of genetic material between them in both healthy brains and those...

    12/13/2018 - 14:49 Neuroscience, Genetics
  • 50 years ago, armadillos hinted that DNA wasn’t destiny

    64 armadillos threaten a theory —

    Armadillos come in fours, quadruplet offspring from a single egg, and are endowed with identical genes. Yet, the quadruplets are often not identical, a fact that calls into question the assumption that genes encased in the nucleus of the cell are the sole determinants of heredity. — Science News, November 30, 1968

    Update

    What comes naturally to...

    12/13/2018 - 07:00 Animals, Genetics
  • News

    Hybrid rice engineered with CRISPR can clone its seeds

    After more than 20 years of theorizing about it, scientists have tweaked a hybrid variety of rice so that some of the plants produce cloned seeds. No plant sex necessary. The feat, described December 12 in Nature, is encouraging for efforts to feed an increasingly crowded world.

    Crossing two good varieties of grain can make one fabulous one, combining the best versions of genes to give...

    12/12/2018 - 15:52 Plants, Genetics, Sustainability
  • News

    A 5,000-year-old mass grave harbors the oldest plague bacteria ever found

    A long-dead Scandinavian woman has yielded bacterial DNA showing that she contracted the earliest known case of the plague in humans.

    DNA extracted from the woman’s teeth comes from a newly identified ancient strain of Yersinia pestis, the bacterium that causes plague, the oldest ever found. The woman’s bones, which date from 5,040 to 4,867 years ago, were found nearly 20 years ago in a...

    12/06/2018 - 11:00 Genetics, Anthropology, Microbiology
  • News

    Dads, not just moms, can pass along mitochondrial DNA

    Some dads have broken a textbook genetic rule. Fathers in three unrelated families passed mitochondria — tiny energy factories found in cells — on to their children, researchers report.

    Scientists have long thought that children inherited mitochondria exclusively from their mothers, since mitochondria from the father’s sperm are usually destroyed after fertilizing the egg (SN: 1/1/00, p...

    12/03/2018 - 06:00 Cells, Genetics
  • News

    The researcher who created CRISPR twins defends his work but fails to quell controversy

    A Chinese researcher who helped create the world’s first gene-edited babies publicly disclosed details of the work for the first time to an international audience of scientists and ethicists, and revealed that another gene-edited baby is due next year.

    Lulu and Nana, twin girls whose DNA was edited with CRISPR/Cas9 to disable the CCR5 gene involved in HIV infections, may soon be joined...

    11/28/2018 - 15:54 Genetics, Science & Society
  • News

    Chinese scientists raise ethical questions with first gene-edited babies

    A Chinese scientist’s surprise announcement on the eve of an international human gene-editing summit that he has already created the world’s first gene-edited babies has led to swift condemnation.

    Jiankui He is expected to discuss his work November 28 in Hong Kong at the second International Summit on Human Genome Editing. But in an interview with the Associated Press, and in a video...

    11/27/2018 - 17:51 Genetics, Science & Society