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D2.1.3—Equal and unequal cytokinesis

Cytokinesis is usually equal, but budding and oogenesis can distribute cytoplasm unequally between daughter cells in specific reproductive contexts and development.

Syllabus
First assessment 2025
Objective
D2.1.3
Level
SL

Exam analysis

Chance of appearing1%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper1A
Typical marks1

Common command terms

  • Identify

Recent exam appearances

November 2025Paper1A ["SL"] · TZ312[ 1 ]D2.1.3—Equal and unequal cytokinesis
Practice this objective

Coverage 2025–2025 · Updated 16 Jul 2026

Concept essentials

  • Equal cytokinesis gives daughter cells similar cytoplasmic volumes.
  • Yeast budding is an example of unequal cytokinesis.
  • Oogenesis uses unequal cytokinesis to retain cytoplasm in the ovum.
  • Cytokinesis pattern affects daughter-cell size and resources.
ConceptIB Biology SL