Scientists use adult cell cloning to produce a goat. They remove the nucleus from an unfertilised egg cell from goat B and replace it with the nucleus from a body cell of goat A. The developing embryo is placed in the uterus of goat C.
Goat A and the cloned goat are raised in different conditions.
| Goat | Mean daily mass of food eaten during growth in kg | Adult body mass in kg |
|---|---|---|
| A | 2.4 | 70 |
| Cloned goat | 1.8 | 61 |
A student concludes that the cloning was unsuccessful because the cloned goat does not have the same adult body mass as goat A.
Evaluate the student's conclusion.
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.