A laboratory receives two cell samples from mammals.
| Sample | Type of cell | Number of chromosomes counted |
|---|---|---|
| P | Mature red blood cell | 0 |
| Q | Skin cell | 34 |
A technician concludes that samples P and Q must be from different species because the chromosome counts are different.
Explain why the technician's conclusion is not supported by these data.
Sample Q is diploid.
Calculate the number of chromosomes in sample Q that were inherited from one parent.
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.