EduNinja
Learning objective

A1.2.10—Conservation of genetic code

The genetic code is nearly conserved across life, so codons usually specify the same amino acids in different organisms in IB Biology exam contexts.

Syllabus
First assessment 2025
Objective
A1.2.10
Level
SL

Concept essentials

  • Conservation of genetic code 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 appearing6%of analysed past papers
Latest appearanceMay 2018
Most common paperPaper1
Typical marks1

Common command terms

  • Explain

Exam question appearances

May 2018Paper1 SL · TZ212[ 1 ]A1.2.10—Conservation of genetic code
November 2016Paper1 SL · TZ011[ 1 ]A1.2.10—Conservation of genetic code
May 2016Paper1 SL · TZ05[ 1 ]A1.2.10—Conservation of genetic code
November 2014Paper1 SL · TZ018[ 1 ]A1.2.10—Conservation of genetic code
May 2014Paper1 SL · TZ118[ 1 ]A1.2.10—Conservation of genetic code

Coverage 2012–2018 · Updated 14 Jul 2026

Focused stepA1.2.10—Conservation of genetic code