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Why Are Transitions More Common Than Transversions?

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Vikash Swaroop Profile
Vikash Swaroop answered
The word 'transition' is used in genetics and it describes the phenomenon of mutation changing in which there happens that purine changed to another purine nucleotide and same kind of change happens with pyrimidine as it also change itself to another pyrimidine. The reason for the phenomenon of transition is the oxidative deamination and also tautomerization. If we take the phenomenon of transversions, it is a phenomenon in which unlike transition purine changed into pyrimidine and vice versa.

The reason that makes this phenomenon less common is that in transversions, there happens a dramatic change in the chemical structure and that makes the change as more severe and in consequence, the process of transversions occurs less commonly that that of transition.

The phenomenon of less dramatic things happening more commonly is applied to all the fields as there are only a few things that tend to change themselves completely.

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