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A point mutation that replaces a purine with another purine, or a pyrimidine with another pyramidine ____________(a) Nonsense mutation(b) Silent mutation(c) Transition mutation(d) TransversionI got this question during an interview for a job.My enquiry is from DNA Repair topic in section DNA, RNA and Protein Metabolism of Biochemistry

Answer»

Correct answer is (c) Transition MUTATION

The BEST I can explain: Nonsense mutation (point mutation) results in a PREMATURE stop codon.

Transversion refers to substitution of a purine for a pyrimidine or vice-versa.

If the mutation has a negligible effect on the function of a gene, it is KNOWN as a SILENT mutation.



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