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PIMSO 2022 - Science - Senior Secondary - National Round Question 1

PIMSO Science · PIMSO 2022 - Science - Senior Secondary - National Round

Question 1

The following image shows the phylogenetic tree generated from a subset of rodent species. Which of the following statements is therefore not true regarding rodent evolution?

Question illustration
  1. The rodent species form a polyphyletic group.
  2. Common ancestor of Rhynchomys soricoides and Mus musculus diverged at around 20 mya.
  3. Ancestors of Castor canadensis and Pedetes capanesis diverged from later lineages before 60 mya.
  4. Mus musculus is more closely related to Cricetulus griseus than Nannospalax galili.
  5. All of the following statements are true.