A-DNA - 92% relative humidity and low ionic strength
Option: 3
Z- DNA - diameter of the helix is 18Å0
Option: 4
A-DNA - comprises 11 base pairs
Answers (1)
A-DNA is formed under 75% relative humidity and in the presence of sodium, potassium and cesium ions and not in the presence of 92% relative humidity and low ionic strength.
B-DNA is actually formed in the presence of 92% relative humidity and low ionic strength. It exists as right-handed double-helical DNA.
One turn in A-form comprises 11 bases and in B-DNA comprises 10 base pairs.