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Bio Oct 22 Telomeres

Bio Oct 22 Telomeres - Telomeres Problem replication ends...

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Telomeres Problem: replication ends Bacteria & other systems have circular chromosomes Lagging strand problem Chromosome ends are different […..GGGTTC] telomere (end part of chromosome) Special substate for adding extra nucleotides at end for telomerase to bind to Protective measure Highly repetitive Telomerase: reversetranscriptase, encodes the ability to read RNA and turn it into DNA Somatic cells: do not reproduce a lot, low telomerase activity
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