The main function of these regions is to allow the cell to replicate chromosome ends using the enzyme telomerase, as the enzymes that normally replicate DNA cannot copy the extreme 3′ ends of chromosomes.
Disse regioners centrale funktion er at tillade cellen at replikere kromosomender ved brug af enzymet telomerase, da enzymerne som normalt replikerer DNA ikke kan kopiere de yderste 3′-ender af kromosomer.