FlySci.com: Genome by Matt Ridley: Chromosome 14: Immortality
..."So, because of this, the copying of DNA over time shortens the message"...
Où l'on nous (ré ?)apprend le fonctionnement de la copie des gènes à chaque duplication de cellule par le biais de la télomérase avec perte d'information à chaque fois sur la copie résultante ( appelée le télomère) et donc ... vieillissement... La suite en anglais:
FlySci.com: Genome by Matt Ridley: Chromosome 14: Immortality: "So, when the polymerase comes along and begins copying, only a part of the telomeres get lost and the useful text is still preserved. The telomeres, though, are only a temporary solution. Still, over time, when much of the useless text is cut off, the useful text is in danger of being cut off also. So, telomerase comes and repairs the telomeres. Telomerase is basically made out of RNA and its job is to rebuild telomeres. Without telomerase, the cell grows old and dies. If there is a surplus of telomerase, the cell does not die and becomes immortal."
Où l'on nous (ré ?)apprend le fonctionnement de la copie des gènes à chaque duplication de cellule par le biais de la télomérase avec perte d'information à chaque fois sur la copie résultante ( appelée le télomère) et donc ... vieillissement... La suite en anglais:
FlySci.com: Genome by Matt Ridley: Chromosome 14: Immortality: "So, when the polymerase comes along and begins copying, only a part of the telomeres get lost and the useful text is still preserved. The telomeres, though, are only a temporary solution. Still, over time, when much of the useless text is cut off, the useful text is in danger of being cut off also. So, telomerase comes and repairs the telomeres. Telomerase is basically made out of RNA and its job is to rebuild telomeres. Without telomerase, the cell grows old and dies. If there is a surplus of telomerase, the cell does not die and becomes immortal."
posted by TheCric |
12:51
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