In human cells, telomeres are usually lengths of single-stranded DNA containing several thousand repeats of a simple TTAGGG sequence.These guanine-rich sequences may stabilize chromosome ends by forming structures of stacked sets of four-base units, rather than the usual base pairs found in other DNA molecules.. 
Ọ̀pọ̀lọpọ̀ àǹfààní ni omi tí ó ń sọ̀kalẹ̀ yí ń ṣe fún ọmọ ènìyàn, lára rẹ̀ ni a ti ń pèsè iná mọ̀nàmọ́má, ó wúlò nínú ilé, ó wúlò fún mímu, ìdáná àti ìtọ́jú oúnjẹ, ó wúlò fún ìwé, àti bẹ́ẹ̀ bẹ́ẹ̀ lọ.. 