Gce Model Questions Vol1 2022 Biology Question 16
Practice objective / multiple choice question 16 from the 2022 Gce Model Questions Vol1 Biology examination.
Two species of beetles have been compared for a particular gene. A 1500‑base‑pair fragment shows 180 nucleotide differences between them. The gene evolves according to the Jukes‑Cantor model with a substitution rate of \(1 \times 10^{-8}\) per site per year. Assuming the observed differences are the result of divergence in both lineages, estimate the time (in million years) since the two species shared a common ancestor. Give your answer to one decimal place.
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This is Gce Model Questions Vol1 2022 Biology Question 16. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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