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Continuity of life on Earth — Question 5

QCAA 2023, Paper 2 · 3 marks

Q5 · 2023 · Paper 2Unclassified3 marks

QUESTION 5 (3 marks)

Nucleic acid sequences were used to investigate evolutionary relationships between four species.

Biology question figure

a) Explain how data from conserved molecular sequences can be used to estimate time since divergence.

[2 marks]

b) Use the data to infer species II-IV in the cladogram. [1 mark]

[1 mark]

Biology question figure

I: B. bartonus

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