Double Helix The double helix of the DNA is shown along with details of how the bases, sugars and phosphates connect to form the structure of the molecule. DNA is a double-stranded molecule twisted into a helix (think of a spiral staircase). Each spiraling strand, comprised of a sugar-phosphate backbone and attached bases, is connected to a complementary strand by non-covalent hydrogen bonding between paired bases. (Watson, 1968) The bases are adenine (A), thymine (T), cytosine (…
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showed last 75 words of 2250 total
…Crick, F. H. C. 1962. The genetic code. Scientific American 207(4):66-74. Gamov, George. 1955. Information transfer in the living cell. Scientific American 193(4):70-78. Golomb, S. W., Basil Gordon and L. R. Welch. 1958. Comma-free codes. Canadian Journal of Mathematics 10:202-209. Golomb, Solomon W., Betty Tang and Ronald L. Graham 1987. A new result on comma-free codes of even word length. Canadian Journal of Mathematics 39(3):513-526. James D. Watson, The Double Helix, (New York:Atheneum, 1968) Louis Levine, "DNA Replication," Encarta 97 (1996)