NEET BIOLOGY

Detailed explanation-1: -DNA is made of two linked strands that wind around each other to resemble a twisted ladder-a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G) or thymine (T).

Detailed explanation-2: -Double helix, as related to genomics, is a term used to describe the physical structure of DNA. A DNA molecule is made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape.

Detailed explanation-3: -Watson and Crick published their findings in a one-page paper, with the understated title “A Structure for Deoxyribose Nucleic Acid, ” in the British scientific weekly Nature on April 25, 1953, illustrated with a schematic drawing of the double helix by Crick’s wife, Odile.