Scientists transfer a gene for a fluorescent protein into a newly fertilised zebrafish egg. The gene is transferred before the egg cell starts to divide.
Why is the gene transferred before the egg cell starts to divide?
So the transferred gene is copied as cells are produced during growth
So the transferred gene replaces every gene already in the egg cell
So the transferred gene is kept only in the fish's reproductive cells
So the transferred gene prevents the egg cell from developing mutations
80 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.