D1.1 DNA replication

DNA replication copies genetic information through template strands, complementary pairing, enzyme action, proofreading, and laboratory amplification or separation techniques used to analyse DNA.

What you’ll learn

9 learning objectives

Choose one objective for a focused lesson, or study the complete topic.

Exam analysis

An aggregate view of how the complete D1.1 DNA replication appears across past papers.

Chance of appearing29%of analysed past papers

Latest appearanceNovember 2025

Most common paperPaper1

Most tested objectives

D1.1.4—PCR and gel electrophoresis36 questions
D1.1.8 (HL)—Functions in replication15 questions
D1.1.2—Semi-conservative replication13 questions

Common question formats

Definition or recall
Diagram interpretation
Structured response
Process explanation
Calculation
Data analysis
Comparison

Exam question appearances

November 2025Paper2 ["HL"] · TZ19(a)[ 4 ]D1.1.9 (HL)—DNA proofreading

November 2025Paper1A ["HL"] · TZ19[ 1 ]D1.1.4—PCR and gel electrophoresis

November 2025Paper1A ["SL"] · TZ37[ 1 ]D1.1.3—Role of helicase and DNA polymerase

November 2025Paper2 ["SL"] · TZ32(b)[ 1 ]D1.1.4—PCR and gel electrophoresis

November 2025Paper1A ["HL"] · TZ310[ 1 ]D1.1.4—PCR and gel electrophoresis

Practice this topic

4 original exam-style questions based on the patterns above.

Coverage 2010–2025 · Updated 16 Jul 2026