A dideoxynucleotide does not contain
Dideoxy nucleotide Lacks 3' OH group also. Stop the chain elongation when they are incorporated. DNA polymerase requires 3' OH group to begin polymerisation. Use: Sanger chain termination method of DNA sequencing. Didanosine is a dideoxynucleotide used in the therapy of HIV.
2' & 3' OH group
3' & 4' OH group
4' & 5' OH group
2' & 5' OH group
Nucleotides