AHL: DNA replication extensions
This AHL sub-topic covers advanced extensions to core DNA replication for IB Biology HL. We explain telomeres, multiple replication origins, DNA proofread…
📖Study Guide
In-depth bilingual notes with worked past paper examples.
✍️Practice Exam
Original questions for this topic: MCQ + FRQ + Application + drag/match.
🎴Flashcards
20+ flashcards: definitions / formulas / pitfalls. Click to flip.
📊Exam Insight Coming Soon
How this topic is distributed across past papers — data that shows what matters.
📊 Which Biology HL topics are most tested? See the real past-paper frequency →
Stuck on a specific question?
Snap a photo or paste your problem — Ollie (our AI tutor) walks through it step-by-step with diagrams.
Try Ollie free →
Snap a photo or paste your problem — Ollie (our AI tutor) walks through it step-by-step with diagrams.
Try Ollie free →