D4.1.9 (HL)—Gene pool concept
A gene pool is the total set of alleles present in all individuals of a population in evolving populations in evolving populations.
- Syllabus
- First assessment 2025
- Objective
- D4.1.9
- Level
- HL
Exam analysis
Chance of appearing5%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper3
Typical marks1–3
Common command terms
- State
- Discuss
Recent exam appearances
November 2025Paper1B ["HL"] · TZ34(d)[ 3 ]D4.1.9 (HL)—Gene pool concept
May 2016Paper2 ["HL"] · TZ04(b)[ 3 ]D4.1.9 (HL)—Gene pool concept
May 2015Paper3 ["HL"] · TZ12(c)(ii)[ 1 ]D4.1.9 (HL)—Gene pool concept
November 2013Paper3 ["HL"] · TZ02(c)[ 2 ]D4.1.9 (HL)—Gene pool concept
May 2013Paper3 ["HL"] · TZ22(a)[ 1 ]D4.1.9 (HL)—Gene pool concept
Practice this objective
Coverage 2012–2025 · Updated 16 Jul 2026
Concept essentials
- A gene pool includes all alleles in a population.
- Evolution can be described as change in a gene pool over time.
- Mutation, migration, drift and selection can alter the gene pool.