The reason for double helical structure of DNA is the operation of:

electrostatic attractions

No worries! We‘ve got your back. Try BYJU‘S free classes today!

van der Waals forces

No worries! We‘ve got your back. Try BYJU‘S free classes today!

dipole - dipole interactions

No worries! We‘ve got your back. Try BYJU‘S free classes today!

hydrogen bonding

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D hydrogen bonding
The two polynucleotide chains or strands of DNA are linked up by hydrogen bonding between the nitrogenous base molecules of their nucleotide monomers.

Adenine-Thymine (two hydrogen bonds) and Cytosine-Guanine (three hydrogen bonds).

Option D is correct.

Suggest Corrections