Why is it important that the hydrogen bonds that bind the nitrogenous bases (AT and CG) together be weak?

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

sex cells are usually half's then they find another half and make a fertilize egg