简介:Anoverviewispresentedonthestatusofstudiesonmultiplecodesingeneticsequences.Indirectly,theexistenceofmultiplecodesisrecognizedintheformofseveralrediscoveriesofSecondGeneticCodethatisdifferenteachtime.Aduecreditisgiventoearlierseminalworkrelatedtothecodesoftenneglectedinliterature.Thelatestdevelopmentsinthefieldofchromatincodearediscussed,aswellasperspectivesofsingle-baseresolutionstudiesofnucleosomepositioning,includingrotationalsettingofDNAonthesurfaceofthehistoneoctamers.