Verified answer

Its simple... in 3' end there is a -OH group, the H can be replaced with a new nucleotide whereas the 5' end has a phosphate group. Nucleotide cannot be added to a phosphate group

Dna Polymerase Adds Nucleotides To

as well, the way DNA polymerase (the enzyme that replicates DNA) and the "helper enzymes" are formed, it helps the DNA to "zipper" open by technique of utilising grooves. Like maximum issues in organic and organic platforms, they extra wholesome mutually particularly ideas. form and performance result contained in the DNA replication engine operating contained in the 5'-3' direction and not backwards.