OCR A level two-hour lesson, covering Homeobox genes, HOX genes, epigenetics. Includes video clips, clear diagrams and exam questions with answers.

A 7 lesson unit covering the following points of the OCR A level biology syllabus: 5.3 Resting and action potentials Transmission of nerve impulses Synapses 5.5 Receptors and the Mammalian nervous system The brain Reflex actions Muscle structure Muscle contraction This unit comes with a workbook for students to complete as they go through the course and includes diagrams, exercises, retrieval practice questions and exam questions.