During the development of insect-resistant crops, such as Bt maize, a gene coding for a toxin is transferred from the bacterium Bacillus thuringiensis into the genome of the plant cell.
Explain the function of a vector in this process of genetic modification.
State one biological vector that can be used to transfer a gene of interest into a plant cell.
30 exam-style questions on Edexcel IGCSE Biology Genetic modification (genetic engineering). Each one has a worked solution and a mark scheme showing where the marks go.