Telomerase Dna February 14, 2007Telomeraseaging, biology, dna, health, science, telomerase dna, telomerase dna polymerase, telomerase dna repair, telomerase dna replication, telomeres dnaadmin Telomeres: Two genes linked to why they stretch in cancer cells Scientists have provided more clues to one of the least understood phenomena in some cancers: why the “ends caps” of cellular DNA, called telomeres, lengthen instead of shorten.