A gene is the basic functional and physical unit of heredity. Genes are segments of DNA.
They provide instructions required for the synthesis of various proteins.
Deoxyribonucleic acid or DNA is a polymer of nucleotides made of deoxyribose sugar, phosphate backbone, and four chemical bases namely adenine (A), thymine (T), guanine (G), and cytosine (C).
It carries the genetic information of an organism.
Genes are made up of DNA. They are located on thread-like structures called chromosomes.