The ends of chromosomes that are associated with longevity are known as what?

Telomeres are specialized structures located at the ends of chromosomes that play a crucial role in maintaining genomic stability and integrity. They consist of repetitive DNA sequences and protective proteins, functioning to prevent the degradation of chromosome ends during DNA replication. As cells divide, these telomeres shorten, which is believed to be linked to the aging process. The shortening of telomeres is associated with cellular aging and longevity; once telomeres become too short, cells can enter a state of senescence or undergo apoptosis, effectively limiting their lifespan. Thus, the presence and integrity of telomeres are vital for determining the longevity of cells and, by extension, the organism as a whole.