Genetic Mysteries

Op-Ed Columnist - The Luxurious Growth - Op-Ed - NYTimes.com: "It wasn’t long ago that headlines were blaring about the discovery of an aggression gene, a happiness gene or a depression gene. The implication was obvious: We’re beginning to understand the wellsprings of human behavior, and it won’t be long before we can begin to intervene to enhance or transform human life.

Few talk that way now. There seems to be a general feeling, as a Hastings Center working group put it, that “behavioral genetics will never explain as much of human behavior as was once promised.”

Studies designed to link specific genes to behavior have failed to find anything larger than very small associations. It’s now clear that one gene almost never leads to one trait. Instead, a specific trait may be the result of the interplay of hundreds of different genes interacting with an infinitude of environmental factors."