Heredity: Inheritance and Variation of Traits

  1. Health & Medicine

    Examining Neandertal and Denisovan DNA wins a 2022 Nobel Prize

    Svante Pääbo figured out how to examine the genetic material from these hominid ‘cousins’ of modern humans.

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  2. Animals

    Living mysteries: This critter has 38 times more DNA than you do

    The genomes of salamanders are bloated with genetic “parasites.” That extra DNA slows down their lives and strands them in perpetual childhood.

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  3. Life

    Scientists Say: Fungi

    Although some fungi can cause diseases, others can be eaten, used to make medicines or serve other useful functions.

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  4. Animals

    A dog’s breed doesn’t say much about its behavior

    Many people associate dog breeds with specific behavioral traits. But breed appears to account for only about 9 percent of behavioral differences.

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  5. Animals

    Losing some genes may explain how vampire bats can live on blood

    Loss of 13 genes active in other bats could support the vampires’ blood-eating strategies and adaptations.

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  6. Health & Medicine

    Sickle-cell gene therapies offer hope — and challenges

    Doctor Erica Esrick discusses existing treatments and an ongoing clinical trial for a gene therapy to treat sickle cell disease.

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  7. Health & Medicine

    Explainer: What is sickle cell disease?

    Gene mutations can alter an individual’s hemoglobin in ways that curl their blood cells. This can cause painful sickle cell disease.

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  8. Archaeology

    Our species may have reached Europe while Neandertals were there

    Archaeological finds from an ancient French rock-shelter show periodic settlements by both populations, just not at the same time.

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  9. Animals

    A new drug mix helps frogs regrow amputated legs

    The treatment helped frogs grow working limbs useful for swimming, standing and kicking. It’ll be a while before people can do that.

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  10. Health & Medicine

    Gender-affirming care improves the mental health of transgender youth

    Several states have tried to restrict access to gender-affirming health care for transgender youth. That goes against medical guidelines.

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  11. Animals

    Will the woolly mammoth return?

    Scientists are using genetic engineering and cloning to try to bring back extinct species or save endangered ones. Here’s how and why.

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  12. Animals

    Cloning boosts endangered black-footed ferrets

    A cloned ferret named Elizabeth Ann brings genetic diversity to a species that nearly went extinct in the 1980s.

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