22. It is composed of two polynucleotide chains which are coiled around each other in the form of a double helix. A.DNA B.RNA C.Fats D.None of the above
Answer: Option A Solution: DNA) is a molecule composed of two polynucleotide 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.
