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CAIE A-Level Biology 5.1.4 Telomeres and DNA Replication

Practise explaining how repetitive non-coding telomeres protect genes from replication-end loss, shorten across cell cycles and are maintained by telomerase in stem or tumour…

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • locate repetitive non-coding telomere sequences at the ends of linear chromosomes
  • explain how telomeres prevent coding genes being lost during repeated DNA replication
  • connect telomere maintenance with continued division in stem cells or tumour cells

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