An early embryo is formed using an egg from cow P and sperm from bull Q. Before its cells specialise, the embryo is split into two. The two resulting embryos develop in cows R and S.
Which statement correctly describes the nuclear genetic information of the two calves?
It differs between the calves; one matches cow R and the other matches cow S.
It matches between the calves; each has genetic information from cow P and bull Q.
It matches between the calves; each has genetic information from cow R and cow S.
It differs between the calves; one matches cow P and the other matches bull Q.
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.