<prompt> Which form of DNA is seen predominantly.ACBZ  <response>: Ans. is c i.e. B form: Type of DNADNA can exist in several confirmation depending upon the base composition and under different physical conditions.These are :B- DNA most common confirmationA- DNAZ-DNAWithin the cells, most of the DNA is B - DNA although regions rich in guanine and cytosine base pairs may assume 2 - confirmation.A - DNA is not found under physiological condition. When B - DNA crystals are dried the long thin B - DNA molecules becomes short, stubby A-DNA. 