What happens during the process of embryo transplanting in cattle?
The nucleus of an egg cell is replaced with a nucleus from a body cell
Small groups of cells are grown on a growth medium in sterile conditions
An embryo is split into cells, and each cell grows into a new embryo
An egg cell is fertilised in a dish and then placed into a host mother
44 exam-style questions on AQA GCSE Biology 6.2 Variation and evolution, covering 6.2.1 Variation, 6.2.2 Evolution, 6.2.3 Selective breeding, 6.2.4 Genetic engineering, and 6.2.5 Cloning. Each one has a worked solution and a mark scheme showing where the marks go.