JL asked this interesting question =)
Here is the answer as promised:
Thymine is actually methylated-Uracil.
The methylation will make DNA unrecognizable by nucleases and thus ensuring the integrity of the DNA genome for replication.
Also cytosine can spontaneously deaminate to become uracil (C--> U mutation is quite common). However, DNA repair proteins will be able to recognise/differentiate and fix it since this uracil is not methylated.
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In Groove with Life
***** A site for my classes because life goes beyond prescribed text and there is so much to share and to learn. And of course, since lessons are often punctuated with hysterical laughter and incoherent mind flow, here is a venue to organise my thought processes.
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