watson and crick double helical model of dna in easy
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The Watson-Crick Model of DNA (1953)
Deoxyribonucleic Acid (DNA) is a double-stranded, helical molecule. It consists of two sugar-phosphate backbones on the outside, held together by hydrogen bonds between pairs of nitrogenous bases on the inside. The bases are of four types (A, C, G, & T): pairing always occurs between A & T, and C & G. James Watson (1928 - ) and Francis Crick (1916 - 2004) realized that these pairing rules meant that either strand contained all the information necessary to make a new copy of the entire molecule, and that the order of bases might provide a "genetic code".
Deoxyribonucleic Acid (DNA) is a double-stranded, helical molecule. It consists of two sugar-phosphate backbones on the outside, held together by hydrogen bonds between pairs of nitrogenous bases on the inside. The bases are of four types (A, C, G, & T): pairing always occurs between A & T, and C & G. James Watson (1928 - ) and Francis Crick (1916 - 2004) realized that these pairing rules meant that either strand contained all the information necessary to make a new copy of the entire molecule, and that the order of bases might provide a "genetic code".
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