Final answer:
DNA replication is the process which involves the formation of a double-stranded DNA molecule from single-stranded DNA molecules of two different samples. It is a semi-conservative process that results in the formation of two identical daughter DNA molecules.
Step-by-step explanation:
The process which involves the formation of a double-stranded DNA molecule from single-stranded DNA molecules of two different samples is called DNA replication. It is a semi-conservative process where one strand of the parent DNA molecule is conserved in each of the two daughter DNA molecules. During DNA replication, an enzyme called DNA helicase breaks the bonds between complementary bases in the DNA molecule, allowing another enzyme called DNA polymerase to build two new DNA strands with complementary bases, resulting in the formation of two identical daughter DNA molecules.