Question

Why h bond are structarry and functionally most important bonds of dna?

Answer 1

Answer:

Hydrogen bonding in DNA[edit]

These hydrogen bonds between complementary nucleotides are what keeps the two strands of a DNA helix together. Each base can also form hydrogen bonds with the external environment such as with water.

Answer 2

DNA is o­ne of the nucleic acids, information-containing molecules in the cell (ribonucleic acid, or RNA, is the other nucleic acid). DNA is found in the nucleus of every human cell. The information in DNA:  guides the cell (along with RNA) in making new proteins that determine all of our biological traits  gets passed (copied) from one generation to the next