Two treatments are tested on bacteria that cannot normally produce human insulin.
The bacteria are then washed and grown for many generations in medium without insulin. Which prediction is correct, assuming the introduced gene is retained and works?
Only P descendants produce insulin, because the supplied protein is copied during bacterial reproduction.
Both sets of descendants produce insulin, because protein and gene are copied during bacterial reproduction.
Neither set of descendants produces insulin, because human material disappears during bacterial reproduction.
Only Q descendants produce insulin, because the introduced gene is copied during bacterial reproduction.
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.