Description: Segment 1 Gilliland introduces Weatherall. Weatherall shows a diagram of a haemoglobin molecule and explains its structure. Time start: 00:00:00:00 Time end: 00:05:10:00 Length: 00:05:10:00 Segment 2 Weatherall refers to a diagram illustrating the genetic control of amino acid chains in haemoglobin and a chart showing the classification of thalassaemias. Time start: 00:05:10:00 Time end: 00:09:33:00 Length: 00:04:23:00 Segment 3 A photograph is shown of a child with beta thalassaemia and Weatherall then describes what can be seen in photomicrographs of red blood cells and bone marrow from a child with beta thalassaemia. A photograph of a stillborn baby is shown. Time start: 00:09:33:00 Time end: 00:14:56:00 Length: 00:05:11:00 Segment 4 A diagram is used to explain the defective pathway in haemoglobin H disease. Weatherall refers to a diagram which illustrates genetic control of protein production. A further diagram is used to illustrate the outcomes of different defects in protein synthesis pathways. Time start: 00:14:56:00 Time end: 00:20:45:00 Length: 00:05:49:00 Segment 6 Weatherall shows a diagram detailing mRNA to cDNA pathways, then concludes the lecture. Time start: 00:24:38:13 Time end: 00:29:06:19 Length: 00:04:28:06