DNA is replicated in a semi conservative fashion – that is each daughter DNA has one
strand from the parent and one is newly replicated.
The template strand is in opposite direction to the growing DNA strand. (DNA is
synthesized in a 5’ to 3’ direction). The 3’ OH on the last nucleotide on the growing
strand reacts with the α phosphate of the incoming dNTP.
Structure of a Nucleotide (dNTP: N stands for any base):