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Watson-Crick helix |
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Watson-Crick helix [wôt′sən krik′] Etymology: John Dewey Watson, American geneticist, b. 1928; Francis H. Crick, British biochemist, b. 1916; Gk, helix, coil a model of the deoxyribonucleic acid (DNA) molecule proposed by Watson and Crick as two right-handed polynucleotide chains coiled around the same axis as a double helix. The purine and pyrimidine bases of each strand are on the inside of the double helix and paired according to a Watson-Crick base-pairing rule. Variations in the sequences of the bases determine the genetic information transmitted by the DNA molecule. Watson and Crick received the Nobel Prize in 1962. Watson-Crick helix, n.pr a model of the DNA molecule proposed by Watson and Crick as two right-handed polynucleotide chains coiled around the same axis as a double helix. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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