Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
the complementary DNA sequence can be read out by replacing each base with its complement and reversing the order.<span> The complementary base pairs are A to T and G to C, so every G is replaced with a C and so on.</span>
Enzymes primarily make things easier. It helps create a "pathway" of sorts for the reaction to go along smoother. I hope this helps!