During DNA replication which bond breaks:
Answer:c. Hydrogen bond When DNA replicates, a helicase enzyme "unzips" the double helix, breaking the hydrogen bonds that hold it together in the centerThe two strands of the double helix separate when hydrogen bonds between the paired bases are disrupted. Disruption can occur in the laboratory if the pH of the DNA solution is altered so that the nucleotide bases ionize, or if the solution is heated.
Phosphodiester bonds
Phosphate bond
Hydrogen bond
Glycosidic bonds