Final answer:
During DNA replication, the parental DNA strands separate, and new daughter strands are made in a process called semi-conservative replication.
Step-by-step explanation:
DNA replication is the process where the parental DNA strands separate and new daughter strands are made.
During DNA replication, each of the two strands that make up the double helix serves as a template for new strands to be copied. The new strands are complementary to the parental or 'old' strands. After replication, each double-stranded DNA includes one parental or 'old' strand and one 'new' strand, a process known as semi-conservative replication.
For example, if the parental DNA strands are ACGT, the newly synthesized daughter strands would be TGCA.