A body cell from a lizard divided by mitosis. A scientist grouped all the chromosomes from one daughter cell according to their length.
| Chromosome length | Number of matching pairs |
|---|---|
| Long | 5 |
| Medium | 6 |
| Short | 3 |
Calculate the number of chromatids that were present in the parent cell immediately after its DNA was copied.
104 exam-style questions on AQA GCSE Biology 1.2 Cell division, covering 1.2.1 Chromosomes, 1.2.2 Mitosis and the cell cycle, and 1.2.3 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.