Outline5 marksStandard
Outline how selective breeding can be used to improve milk yield in dairy cattle over several generations.
CAIE A Level Biology 9700 · Selection and evolution
Selection and evolution: outline question
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.
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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