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- noun Plural form of
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So, looking at all these neutral mutations of cistrons,the ones that only change the nucletide but not the amino acid, and the further ones that make conservative amino acid changes, we can summarise that many improved mutations are just waiting for the correct complements to come along.
This again is a quirk of biology (much like this system) where another bacterium may have 7 ribosomal RNA cistrons, mycobacteria only have a single one.
We were led to this conclusion by the study of mutations in the A and B cistrons of the rII locus of bacteriophage T4.