Q.Watson and Crick shared the Nobel Prize in _________ for their discovery.

DNA (deoxyribonucleic acid) is a polymer of deoxyribonucleotides that, as proposed by James Watson and Francis Crick using crystallographic data from Rosalind Franklin and Maurice Wilkins, takes the form of a right-handed double helix - two antiparallel polynucleotide strands (one running 5'->3', the other 3'->5') coiled around a shared axis and held together by hydrogen bonds between complementary base pairs. Adenine pairs with thymine through two hydrogen bonds, and guanine pairs with cytosine through three hydrogen bonds, in agreement with Chargaff's rule (A = T and G = C, so total purines always equal total pyrimidines). Because the two sugar backbones protrude from the base pairs at unequal angles, the helix surface has a wide major groove and a narrow minor groove. In the predominant B-form of DNA, bases are stacked 0.34 nm apart, with one full helical turn spanning 3.4 nm and containing about 10 base pairs, and an overall helix …