Using DNA similarities -Model answers (Activity 2)

IB Biology: Using DNA similarities -Model answers (Activity 2)

Species A: CATCATCATCATCATCATCATCATCATCATSpecies B: CATCATTACTACTACTACCATCATCATCATSpecies C: CATCATTACTACTACTACCATCATTATCATIn the DNA of these species there looks to have been two mutations. Of course both of these mutations could have happened in reverse. TAC could have become CAT and T could have become C. Is it possible to identify which base sequence came first?

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