Q BankQuestion BankDocsDocuments

D3.1.14 (HL)—Gametogenesis

Gametogenesis produces haploid gametes through mitosis, growth, meiosis and differentiation, with spermatogenesis and oogenesis differing in output and timing patterns.

Syllabus
First assessment 2025
Objective
D3.1.14
Level
HL

Exam analysis

Chance of appearing17%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper1
Typical marks1–4

Common command terms

  • Identify
  • Compare
  • Describe
  • Outline

Scoring notes

Common mistake
Confusing spermatogonia, spermatocytes, spermatids and spermatozoa in the sequence.

Recent exam appearances

November 2025Paper1A ["HL"] · TZ330[ 1 ]D3.1.14 (HL)—Gametogenesis
November 2025Paper1A ["HL"] · TZ129[ 1 ]D3.1.14 (HL)—Gametogenesis
May 2025Paper1A ["HL"] · TZ230[ 1 ]D3.1.14 (HL)—Gametogenesis
November 2024Paper1 ["HL"] · TZ039[ 1 ]D3.1.14 (HL)—Gametogenesis
November 2023Paper1 ["HL"] · TZ239[ 1 ]D3.1.14 (HL)—Gametogenesis
Practice this objective

Coverage 2012–2025 · Updated 16 Jul 2026

Concept essentials

  • Spermatogenesis occurs in seminiferous tubules of the testes.
  • Meiosis I changes primary spermatocytes into haploid secondary spermatocytes.
  • Oogenesis uses unequal cytokinesis, producing one ovum and polar bodies.
ConceptIB Biology HL