Dna Complementarity Diagram. The nitrogenous bases of the two separate polynucleotide strands are bound together according to base pairing rules a with t and c with g with hydrogen bonds to make double stranded dna. The boxed area at the lower left encloses one nucleotide.
While working on the structure of dna watson and crick not only figured out that. Dna comprises a sugar phosphate backbone and the nucleotide bases guanine cytosine adenine and thymine. Adenine of one strand pairs with thymine of the opposite.
They found that dna is a double helical structure with two paired dna strands with complementary nucleotide sequences.
A dna molecule consists of two complementary chains of nucleotides a dnamoleculeconsists of two long polynucleotide chains composed of four types of nucleotidesubunits. Complementary bases are. This inferred conformational change has been the. Adenine a and thymine t and cytosine c and guanine g.