What type of bond between the complementary bases of DNA stabilizes the double helix structure?

Answer 1

The answer is Hyrdogen bond.

Answer 2

Hello there!

I can tell you that this type of interaction is between a Nitrogen atom of one nitrogenous base and a Hydrogen atom of another nitrogenous base. Notice that this "bonding" is similar to the "bond" between a Hydrogen atom and Oxygen atom in water or H₂O. What kind of "bond" exists in water? The same kind of bond exists here between complementary bases of DNA :)

The reason I mention "bond" in quotes like that is because this kind of interaction technically isn't a bond like a covalent bond which is the equal sharing of electrons.

Hope this helps :)

Answer 3

Hydrogen bonds hold the two DNA strands together.