The perennial debate about nature and nurture--which is the more potent shaper of the human essence?--is perennially rekindled. It flared up again in the London Observer of Feb. 11, 2001. REVEALED: THE SECRET OF HUMAN BEHAVIOR, read the banner headline. ENVIRONMENT, NOT GENES, KEY TO OUR ACTS. The source of the story was Craig Venter, the self-made man of genes who had built a private company to read the full sequence of the human genome in competition with an international consortium funded by taxes and charities. That sequence--a string of 3 billion letters, composed in a four-letter alphabet, containing the complete...
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