Biology · GCSE · Reproduction & Genetics

Meiosis

gcse-biol-4-6-1-2Free2:16Heddy Score 3 of 7, below the standard

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What you need to know

  • Meiosis makes four genetically different gametes with half the chromosomes
  • Mitosis makes identical body cells

In this clip

8:20–12:29Hormones in reproduction and the menstrual cyclegcse-biol-4-5-3-3
12:29–14:45Meiosisgcse-biol-4-6-1-2
14:45–15:29Sexual and asexual reproductiongcse-biol-4-6-1-1
15:29–21:25DNA and the genomegcse-biol-4-6-1-3
21:25–24:05Inherited disordersgcse-biol-4-6-1-5
24:05–28:24Evolution by natural selectiongcse-biol-4-6-2-2
28:24–33:09Selective breedingb69
33:09–36:10Antibiotic-resistant bacteriagcse-biol-4-6-3-4
36:10–38:50Communities, interdependence and competitiongcse-biol-4-7-1-1
38:50–39:32Adaptations and extremophilesgcse-biol-4-7-1-4
39:32–41:12Food chainsb54
41:12–44:26The carbon cycleb59
47:03–49:40Decomposers & recyclingb60
49:40–51:52Human impact on ecosystemsb63
Also coversVariation and mutationgcse-biol-4-6-2-1
Heddy Score3/7, Below the standard
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
How the Heddy Score works

Why we picked it

A long AQA Paper 2 revision run-through for Year 11; 14 sections timed, with the opening and the separate-science brain section unmapped.

Primrose Kitten Academy | GCSE & A-Level Revision on YouTubechecked 2026-10-16