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Total number of transition and transversion that can take place in genome is___________(a) 2 and 6(b) 6 and 4(c) 4 and 6(d) 4 and 8I had been asked this question in an internship interview.This interesting question is from DNA Mutation in portion DNA Mutation, DNA Repair, Transposable Elements of Cytogenetics

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Right answer is (d) 4 and 8

For explanation I would say: Transition is the replacement of a purine by another purine or a PYRIMIDINE by another pyrimidine. TRANSVERSION is the replacement of a purine by a pyrimidine, or a pyrimidine by a purine. So there are 4 possible transition A—G and C— T, and 8 possible transversions A—C, A—T, G—C, G—T.



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