how do dna molecules differ from one another
DNA and RNA are identical in almost every way. They differ in their sugar molecules. DNA contains the sugar deoxyribose, whereas RNA contains the sugar ribose. These two sugar â¦ s are the same except for one OH (hydroxide) ion (deoxyribose has one OH ion more than ribose).hat differentiates them (and their DNA) is the sequence of base-pairs within the DNA. The base-pairs are actually specific sequences of nucleotides (i.e. adenine, thymine, guanine and cytosine, labelled A, T, G, and C respectively) which encode genes.