Secrets of the Seaweed 2011 Question 6

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Challenge Question 6

Discuss the potential mechanisms and role of climate change in causing genetic variation within Durvillaea antarctica. Use the data from Fig 8 and Fig 9 (on page 5 of the seminar paper), to explain why the evidence suggests that the subantarctic populations of Durvillaea antarctica have colonised this area recently (in terms of geological time). Explain what would have to occur in order for new species to evolve from the variants currently seen within the population?