Q. The reason for double helical structure of DNA is operation of
A) Van der Waals’ forces
B) Dipole –dipole interaction
C) Hydrogen bonding
D) Electrostatic attractions
Explanation
(c)
Hydrogen bonding is involved molecular force in the DNA molecule.
Watson and Crick observed the purine-pyrimidine type of hydrogen bonding (instead of purine-purine and pyrimidine-pyrimidine).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.