Question

describe the structure of DNA ​

Answer 1

The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.

Answer 2

MOLECULAR STRUCTURE OF DNA :

   (Deoxyribonucleic acid)

• The shape of DNA molecule was first studied by Rosalind Franklin in 1953.
• Then its structure was worked out by Watson and Crick in the same year.
• Then they proposed the double stranded helical structure of DNA.
• They were awarded Nobel prize in 1962.