Watson-Crick model


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Watson-Crick model

(wät′sən-krĭk′)
n.
A three-dimensional model of the DNA molecule, consisting of two complementary polynucleotide strands wound in the form of a double helix and joined in a ladderlike fashion by hydrogen bonds between the purine and pyrimidine bases.

Watson-Crick model

The double helix concept of the DNA molecule, proposed by two workers in Cambridge in 1953, which triggered off a revolution in biology and medicine and led to an explosive succession of advances in genetics. (James D. Watson, b. 1928, American molecular biologist; and Francis H. C. Crick, b. 1916, English biochemist, now neurophysiologist).