Final answer:
The base pair rule, also known as the base complementary rule, allows DNA replication to occur and results in two new daughter DNA molecules.
Step-by-step explanation:
DNA replication occurs through the base pair rule, also known as the base complementary rule. This rule states that adenine (A) can only pair with thymine (T), and guanine (G) can only pair with cytosine (C). For example, if one DNA strand has the sequence 5'-AATTGGCC-3', the complementary strand would have the sequence 3'-TTAACCGG-5'. When DNA replicates, each strand serves as a template for the synthesis of a new complementary strand, resulting in two daughter DNA molecules with the same sequence as the original parental DNA.