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The pentadactyl limb plan

The pentadactyl limb plan

A pentadactyl limb is a vertebrate limb built from the same basic plan: one upper bone, two lower bones, wrist or ankle bones, and five digits. “Penta” means five, referring to the five-digit ancestral pattern.

4.2.3 Pentadactyl limb as evidence Lesson

  1. GCSE
  2. /Biology
  3. /4.2.3 Pentadactyl limb as evidence

Step-by-step lessons on Edexcel GCSE Biology 4.2.3 Pentadactyl limb as evidence. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons