Another important use of ambiguity is that sometimes you search sequence ambiguously. So even though the raw DNA only contains {GCAT}, sometimes you are looking for sequences that, at some point, can have restricted sets like {GC} or {AT}.

In reply to Re: Re: Re: Re: Re: BioInformatics - polyA tail search by Anonymous Monk
in thread BioInformatics - polyA tail search by MiamiGenome

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