I wrote a little test script to test if you were right (and you were), so my question is what use is the upper range indicator? I thought it allowed you to limit the number of times that something matched, but apparently it does not. 
#!/usr/bin/perl
use strict;
my $seq = "ANANNNNANANANANANANANANANANA";
if ($seq=~/[AN]{10,11}?/) {
  print "I matched\n";
}
else {
  print "I did not match!\n";
}

__OUTPUT__
I matched

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In reply to Re: Re: Re: Re3: BioInformatics - polyA tail search by fletcher_the_dog
in thread BioInformatics - polyA tail search by MiamiGenome

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