DNA molecules labeled with ¹⁵ N and ¹⁴ N can be separated by
Mechanistically, nucleic acid structure and recombination involves hairpin formation, Holliday junction resolution and translation control ensure fidelity. This validates Density gradient ultracentrifugation because it matches molecular mechanisms, a pattern repeatedly demonstrated in molecular biology research.
Ref: Alberts et al., Molecular Biology of the Cell, 6th Edition, Chapter 5, DNA Replication and Repair, discusses Holliday junction formation during homologous recombination and replication fork dynamics ensuring genome duplication.
