Search Results for: mutations

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2,448 results

2,448 results for: mutations

  1. Visionary Research

    Scientists are debating why primates evolved full color vision and whether that development led to a reduced sense of smell.

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  2. Math

    Prime-Time Cicadas

    Cicadas are flying, plant-eating insects. Most cicada species have life cycles that span 2 to 8 years. They spend most of their lives underground before emerging as adults. In a few species, almost all the individuals in a given location come out of hiding at the same time. These are known as periodical cicadas, and […]

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  3. Health & Medicine

    Enzyme needed to degrade acetaldehyde

    A shortage of the enzyme ALDH-2, which is needed to break down alcohol in the body, causes a buildup of the cancer-linked chemical acetaldehyde, perhaps explaining why alcoholics lacking ALDH-2 have high rates of mouth and throat cancers.

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  4. Computing

    Straining for Speed

    Hitting fundamental limits on how small they can make certain structures within semiconductor transistors, chip makers are deforming the silicon crystals from which those transistors are made to eke out some extra speed.

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  5. Plants

    Micro Sculptors

    Snippets of RNA that control biochemical reactions by squelching the creation of specific proteins play a role in the development of leaves.

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  6. Health & Medicine

    Huntington’s Advance: Drug limits disease effects in laboratory mice

    A compound that inhibits enzymes that act as stop signs for genes counteracts the movement disorders brought on by Huntington's disease, a mouse study suggests.

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  7. Animals

    Life Without Sex

    The search is on for creatures that have evolved for eons without sex.

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  8. 19191

    I was shocked to read that now we need to be concerned not only with genetically modified organisms that we can see, but code-transgressing organisms that are invisible. Altering Escherichia coli in this way seems very dangerous. E. coli is found in every human intestine and has a proven ability to swap genetic material with […]

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  9. 19163

    Why has so much focus been placed on protecting us against the threat of a smallpox outbreak when a terrorist could choose to release a different infectious disease? Wouldn’t it be wiser to discuss ways to respond to and contain any unknown disease? More public awareness of this possibility would prevent the false sense of […]

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  10. Hormone dulls a tongue’s taste for sweets

    The hormone leptin may suppress the tongue's ability to taste sugary substances.

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  11. Humans

    Science News of the Year 2000

    A review of important scientific achievements reported in Science News during the year 2000.

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  12. 19184

    In this article, I was surprised to read that chimeras harboring a mutation are not medically useful. Consider the value of cytokine-receptor mutations in humans, with respect to HIV. It’s likely that introducing some genetic mutations can inhibit viruses or bacteria in a host. Freda Wasserstein Robbins New Jersey City University Jersey City, N.J.

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