Final answer:
The structure of DNA makes replication easy because the two strands of the double helix can separate and each serve as a template for the synthesis of a new complementary strand. This is known as semi-conservative replication.
Step-by-step explanation:
The structure of DNA makes replication easy because the two strands of the double helix can separate and each serve as a template for the synthesis of a new complementary strand. This process is known as semi-conservative replication. The DNA helix unwinds, breaking the hydrogen bonds between the base pairs, and the enzyme DNA Helicase is involved in this process. The resulting single strands of DNA are then used as templates for the synthesis of new strands, using the base pairing rules (A with T, and C with G). Each new DNA molecule consists of one original strand (parental strand) and one newly synthesized strand.