<<  The consequences of a dimer on a mRNA would be a different matter.
There may be some mistranslation in this case. But tRNAs have long
lifetimes and are repeatably reused, while mRNAs have only lifetimes
of a few minutes in bacteria and maybe something over an hour in
eukaryotes. There just isn't much time for dimer damage to occur on
the mRNA.
 William L Hunt >>


TH
But isn't it possible that short lived mRNA are an evolved state such that - if
it was long lasting it would continue producing and wasting resources long
after they were needed.

"Rapid degradation of lac mRNA ensures that the energetically wasteful
synthesis of these proteins will cease soon after the need for the proteins is
gone."
Biochem, Mathews, van Holde.

Tom
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