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Updated: Jun 4, 2026

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
12:08

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence

Published on: May 22, 2013

Telomeres: unlocking the mystery of cell division and aging

Guido R Zanni1, Jeannette Y Wick

  • 1psychologist and health systems consultant, Alexandria, Virginia.

The Consultant Pharmacist : the Journal of the American Society of Consultant Pharmacists
|February 12, 2011
PubMed

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In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
Telomeres and Telomerase02:41

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