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DNA after death

Discussion in 'Science and Technology' started by Orbit, Jan 25, 2022.

  1. Orbit

    Orbit I'm a planet

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    • Informative Informative x 9
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    • Useful Useful x 1
  2. The Hammer

    The Hammer Corporate Board Stooge
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    Very cool and trippy yes.
     
  3. We Never Know

    We Never Know Well-Known Member

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    DNA is everywhere, even in the air. That's no surprise to anyone who suffers allergies from pollen or cat dander. But two research groups have now independently shown the atmosphere can contain detectable amounts of DNA from many kinds of animals.

    AAAS.
     
  4. exchemist

    exchemist Veteran Member

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    I don't think this is so surprising when you think about it. Death means the brain stops working, but there is no reason to assume an instant cessation of all biochemical processes in cells. Indeed, the biochemistry goes on, in an increasingly uncontrolled way, leading to degradation of the tissues. Given that certain genes are active at some stage of life and are then suppressed by control mechanisms, it is not odd to find that in some cases the control mechanism collapses before the genes do, thus enabling them to become active - for a bit.

    In short, life may stop, but chemistry goes on...............
     
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  5. Aupmanyav

    Aupmanyav Be your own guru

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    Nice and informative post. After death, it is chemistry as Ex-chemist said. After death, it is over to Ex-chemist. There is no oxygen around, no blood, so the genes are playing a solo card game within themselves like people who have nothing else to do..
     
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  6. Twilight Hue

    Twilight Hue Twilight, not bright nor dark, good nor bad.

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  7. Aupmanyav

    Aupmanyav Be your own guru

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    It is to be noted that sometimes the dead gene molecules survive in degraded manner. And scientists hope that some day we may be able to revive an extinct species with them. Mammoths frozen in Tundra are a matter of interest.
     
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