How does complementary base pairing play a crucial role in the process of DNA replication?

Complementary base pairing is crucial in DNA replication because it ensures that the new DNA strands are exact copies of the original DNA. During replication, the bases adenine pairs with thymine, and guanine pairs with cytosine, maintaining the genetic code. This accurate pairing is essential for the fidelity of DNA replication and the transmission of genetic information to daughter cells.