I don't disagree, and certainly not in the case of nutrition, drugs, and whatnot-- I was just referring to more New-Age kinds of claims that learning begins in utero. You know, play music, recite languages, and so forth, to increase the intellectual development of the fetus. But your point is well taken, that genes are established at conception, and environment starts there, so that's a bit of a problem for those who think their data is not subject to environmental (cultural, economic, gender-based, etc.) pressures.