Watson-Crick model

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Wat·son-Crick model

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.

[After James Dewey Watson and Francis Henry Compton Crick.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
From the earliest discoveries concerning nucleic acids and their biochemistry, through the Watson-Crick model of the DNA molecule and translation of genes into proteins, it was apparent that these genetic elements called genes were responsible for much of what went on in living cells.
They begin by describing DNA structures, including the Watson-Crick model as well as the B, A, and Z forms and their role in DNA flexibility.
Chapter 3 starts with an explanation of the structure and makeup of chromosomes, including base-pairing and the Watson-Crick model. Meiosis and mitosis are covered in more detail than in most introductory plant breeding texts, including photomicrographs.