Scientists are reviewing the classification of three species of small burrowing mammal. Species L was originally placed in the same family as species M because their teeth and forelimbs have similar structures.
Scientists later used molecular evidence to estimate when species L last shared a common ancestor with each of the other species.
| Species compared with L | Order | Family | Estimated time since the most recent common ancestor with L in millions of years |
|---|---|---|---|
| M | X | A | 42 |
| N | X | B | 8 |
Explain which family species L should be placed in and why this change would not require species L to be placed in a different order.
81 exam-style questions on AQA GCSE Biology 6.4 Classification of living organisms, covering 6.4 Classification of living organisms. Each one has a worked solution and a mark scheme showing where the marks go.