<P> Telomeres are repetitive nucleotide sequences located at the termini of linear chromosomes of most eukaryotic organisms . For vertebrates , the sequence of nucleotides in telomeres is T T A G G G. Most prokaryotes , having circular chromosomes rather than linear , do not have telomeres . Telomeres compensate for incomplete semi-conservative DNA replication at chromosomal ends . A protein complex known as shelterin serves to protect the ends of telomeres from being recognised as double - strand breaks by inhibiting homologous recombination ( HR ) and non-homologous end joining ( NHEJ ) . </P>
<P> Telomeres are repetitive nucleotide sequences located at the termini of linear chromosomes of most eukaryotic organisms . For vertebrates , the sequence of nucleotides in telomeres is T T A G G G. Most prokaryotes , having circular chromosomes rather than linear , do not have telomeres . Telomeres compensate for incomplete semi-conservative DNA replication at chromosomal ends . A protein complex known as shelterin serves to protect the ends of telomeres from being recognised as double - strand breaks by inhibiting homologous recombination ( HR ) and non-homologous end joining ( NHEJ ) . </P>
repetitive dna at the end of a eukaryotic chromosome
repetitive dna at the end of a eukaryotic chromosome
Telomeres
Telomeres