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Biology LibreTexts

Unit 13: Aging

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    3772
  • [ "article:topic-guide", "authorname:kimballj" ]

    • 13.1: Aging
      Aging is the progressive loss of physiological functions that increases the probability of death.
    • 13.2: Telomeres
      The DNA molecule of a typical chromosome contains a linear array of genes (encoding proteins and RNAs) interspersed with much noncoding DNA. Included in the noncoding DNA are long stretches that make up the centromere and long stretches at the ends of the chromosome, the telomeres. Telomeres are crucial to the life of the cell. They keep the ends of the various chromosomes in the cell from accidentally becoming attached to each other.

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