CAIE A Level Biology 9700 · Inheritance

Inheritance: describe question

Describe5 marksStandard

In a species of flowering plant, the diploid (2n) chromosome number is 14. Describe the behaviour of chromosomes during meiosis I in a cell from this plant, and explain why a reduction division is necessary before fertilisation can occur.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.

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