same definition as any specified information, information which specifies something
v Shannon information which does not
pretty cut and dry
you don't think your eye color is specified anywhere in your DNA?
again, since DNA is digital information, it can absolutely be quantified in exactly the same way as any other digital information, breaking it down to single 'bits'- 725 Mb worth to be 'fairly' precise
this is represented in electronic voltages in computers, physical pits on an optical disc, chemistry/ nucleotides in DNA, and by wooden blocks on an abacus if you like, the medium the information is carried on does not change the nature of the information itself.
In this case of course DNA is quaternary v binary, base 4 v base 2- but still represented in single 'bits' of information v an analogue information system
well it does come into this, because we don't know exactly how much of that 725 Mb does actually specify anything, just that a lot of it clearly does..
it would be a bit like an alien examining a digital DVD they could play, and trying to figure out which'pits' on the disc represented Brad- not a simple task, but they would easily determine that it was specified somehow