Describe the process of micropropagation (tissue culture) and explain how it can be used to rapidly produce millions of genetically identical cultivars of a commercial crop plant.
Explain how a desirable foreign gene is introduced into a crop plant to create a genetically modified (GM) variety, and suggest two advantages of cultivating GM crops.
39 exam-style questions on Edexcel IGCSE Biology Cloning. Each one has a worked solution and a mark scheme showing where the marks go.