Question

Which of the following descriptions about the different forms of DNA is not correct?

Answer 1

Answer:

Option (d).

Explanation:

DNA is the genetic material of the living organisms (except few viruses). Three different forms of DNA are A-DNA, B-DNA and Z-DNA. B form of DNA is more common and stable form of DNA.

Z-DNA has the ability to form in the junctions between the B-DNA. The Z DNA  has both syn and anti conformation favored by the long repeats of the alternating purines and pyrimidine sequences. Only the pyrimidine sequences are not favorable for the Z-DNA structure.

Thus, the correct answer is option (d).