A2 Biology - DNA profiling (OCR A Chapter 21.1)
25:16
A2 Biology - Genetic engineering (OCR A Chapter 21.4)
8:01
A2 Biology - DNA sequencing (OCR A Chapter 21.2)
5:31
A2 Biology - Polymerase chain reaction (PCR) (OCR A Chapter 21.1)
14:15
A2 Biology - Phenotypic ratios (OCR A Chapter 20.4)
16:00
A2 Biology - Biotechnology overview (OCR A Chapters 22.4-8)
8:27
A2 Biology - Speciation (OCR A Chapter 20.6)
5:08
A2 Biology - Homeobox genes (OCR A Chapter 19.3)
4:45