Question

what is DNA? describe the double helical structure of eukaryotic dna​

Answer 1

Answer:

Deoxyribonucleic acid

is a molecule composed of two chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid (RNA) are nucleic acids; alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macromolecules that are essential for all known forms of life.

Answer 2

Answer:DNA stands has sugar-phosphate chain outside .purine and pyrimidine bases on inner side of helix.

Explanation DNA molecules consists of two anti parallel chains of polynucleotides forming a double helical structure.