Question

Give the biological/technical term for the following:

Type of bond which joins the nitrogenous bases in DNA.

Answer 1

DNA:

1. Deoxyribonucleic acid or DNA carries genetic information from parents to offspring.
2. DNA is made up of nucleotides. Each nucleotide is composed of sugar (deoxyribose), a phosphate group, and a nitrogen base.
3. The nitrogenous bases are of four types- adenine (A), thymine (T), guanine (G), and cytosine (C).
4. A hydrogen bond (H-bond) joins the nitrogenous bases in DNA.
5. There are three H-bonds between guanine and cytosine whereas two H-bonds are present between adenine and thymine.