How does replicated dna compared to the original dna (before it replicated)?

Well in terms of the polynucleotide strands that make up the DNA, it will vary from new and or old sources depending on whether it has been replicated or not. Replicated DNA will contain a single old or originally present polynucleotide strand and one new strand. Unlike the original DNA, which would still have both old polynucleotide strands linked together through hydrogen bonds.