EduNinja
Learning objective

A1.2.9—Diversity of DNA base sequences

DNA stores vast amounts of information because base sequences can vary in length and order across genes, genomes, and organisms.

Syllabus
First assessment 2025
Objective
A1.2.9
Level
SL

Concept essentials

  • Diversity of DNA base sequences should be described using precise molecular vocabulary.
  • Structure and information must be kept separate: backbones provide continuity while bases carry sequence meaning.
  • Exam answers should match the command term and avoid adding unsupported extra claims.

Exam analysis

Question evidence linked specifically to this learning objective.

Chance of appearing1%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1
Typical marks1

Common command terms

  • Explain

Exam question appearances

May 2025Paper1A SL · TZ32[ 1 ]A1.2.9—Diversity of DNA base sequences
May 2011Paper1 SL · TZ218[ 1 ]A1.2.9—Diversity of DNA base sequences

Coverage 2011–2025 · Updated 14 Jul 2026

Focused stepA1.2.9—Diversity of DNA base sequences