role of telomeres

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5 Terms

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telomeres

protective sequences of nucleotides found at the ends of chromosomes which becomes shorter every time a cell divides

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purpose

prevent loss of vital genetic info when DNA replicates…prevents shortening of chromosomes

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stem cells

permit continued replication in stem cells or meristemic cells

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length

determines the lifespan of cells

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apoptosis

cell death is prevented by preventing ends of chromosomes attaching to each other