A3.1.9—Diversity of eukaryote genomes
Eukaryote genomes differ greatly in gene number, sequence, and DNA composition, but gene count alone does not rank evolutionary success.
- Syllabus
- First assessment 2025
- Objective
- A3.1.9
- Level
- HL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2022
Most common paperPaper1
Typical marks1
Recent exam appearances
May 2022Paper1 ["HL"] · TZ110[ 1 ]A3.1.9—Diversity of eukaryote genomes
Practice this objective
Coverage 2022–2022 · Updated 15 Jul 2026
Concept essentials
- Eukaryote genomes vary in gene number and DNA sequence.
- Gene count alone does not determine evolutionary success.
- Genome comparisons require interpretation beyond one numerical measure.
- Not all DNA in a eukaryotic genome codes for proteins.