Apart from A, B, C and Z types of DNA, another form of DNA exists. And that is H
DNA, triple helix DNA.
We all know that the DNA is double stranded but existence
of H DNA proves that all the time, it is not true though H DNA is made in vitro
A virus, phi-X-174 consists single stranded DNA which is
the form before it replicates. So, genomic analysis through species to species
with ready to use DNA isolation kits is needed to know the DNA variant and the
different strains of microbes.