CAIE A Level Biology 9700 · Inheritance
In a species of diploid mammal, males produce sperm and females produce eggs via meiosis. The gametes from each individual are genetically diverse due to crossing over and independent assortment during meiosis. Outline how the random fusion of gametes at fertilisation further increases genetic variation among offspring.
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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