CAIE A Level Biology 9700 · The mitotic cell cycle
The table shows the number of cells observed in each stage of mitosis in a squash preparation of a garlic (Allium sativum) root tip.
| Stage | Number of cells |
|---|---|
| Prophase | 62 |
| Metaphase | 14 |
| Anaphase | 8 |
| Telophase | 36 |
Outline the behaviour of chromosomes and the associated changes to the nuclear envelope and spindle during each stage of mitosis.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.
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