Hints of a Helix, circa 1947 :The Scientist [2009-05-01]


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	By Elie Dolgin

Hints of a Helix, circa 1947 Nearly four decades after biochemist Phoebus Levene first postulated his "tetranucleotide hypothesis" in 1910, most scientists still believed that DNA was made up of equal numbers of the four nucleotide bases in a repeating tetrameric structure, with each subunit containing all four bases.

Hints of a Helix, circa 1947

Nearly four decades after biochemist Phoebus Levene first postulated his "tetranucleotide hypothesis" in 1910, most scientists still believed that DNA was made up of equal numbers of the four nucleotide bases in a repeating tetrameric structure, with each subunit containing all four bases.