Researchers separate two cells from each of two early rabbit embryos. Each separated cell grows into a new embryo, which is placed into a host mother. From each original embryo, one young rabbit receives a larger food supply and one receives a smaller food supply. No mutations occur.
Which prediction would provide the strongest evidence that food supply contributes to variation in body mass?
Rabbits from the two original embryos develop different body masses, but food supply makes no difference within either pair.
All four rabbits develop the same body mass because every rabbit was produced from a separated embryo cell.
The two food supplies cause different alleles to develop, and these alleles produce different body masses.
For each original embryo, the two rabbits develop different body masses under the two food supplies.
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.