DNA is replicated by: 1. Helicase 2. DNA polymerase
Work Step by Step
DNA is first unravelled by the enzyme, DNA helicase. It does so by breaking the hydrogen bonds between the base pairs in the 5' to 3' direction. When the two strands are apart, DNA polymerase matches each base pair of each strand with the complementary DNA base pair. When finished, the DNA strands reanneal to produce two copies of identical DNA.