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Telomeres are specialized regions of repetitive nucleotide sequences located at the ends of chromosomes. These structures are crucial for protecting the genetic material contained within the chromosomes from damage. As the cell divides, the telomeres prevent chromosomes from deteriorating or from being mistakenly recognized as broken ends. They act as a buffer zone to ensure that the critical coding regions of the chromosome are not lost or fused together during DNA replication. Each time a cell divides, the telomeres shorten slightly, and this gradual reduction in length is linked to cellular aging. In humans, the repetitive DNA sequence of telomeres consists of thousands of copies of the base pair sequence TTAGGG.
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BNO Team