Which form of DNA is seen predominantly.
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 confirmation)A- DNAZ-DNA"Within 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".
A
C
B
Z
Structure of DNA