Q23 · 2022 · Paper 1Unclassified3 marks
QUESTION 23 (3 marks)
Compare microevolution and macroevolution.
WORKED SOLUTION
3 marksQCAA guide · typeset solution
QCAA sample response and mark allocation
23 | Both involve changes in allele frequencies, but in microevolution, this change occurs within a species, whereas for macroevolution, the change is at or above the species level. This means that in microevolution, the descendant is in the same taxonomic group as the ancestor, whereas in macroevolution, the descendant is in a different taxonomic group. | • provides a similarity [1 mark] • provides a difference [1 mark] • states the significance [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
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