I found this news report yesterday-
An increasing number of parents are getting their children to undergo a DNA test to determine what they might do best as adults. Such tests in the United States and Europe have progressed to be able to determine the child’s potential IQ, memory power and temperament, parents here and elsewhere in India have started using “sports genetics” to ascertain what sport their children will do best in when they grow up. Doctors use information extracted from the so-called “sports gene” to predict what kind of game the child do best in as an adult.
It makes one feel uneasy because it’s a small, thoughtless, leap from this to genetic determinism, conflating probability with certainty, which immediately brings to mind Gattaca.
“No one exceeds his potential,” the character played by Gore Vidal says. “If he did?” Then “it would simply mean that we did not accurately gauge his potential in the first place.” There’s an essay on the implications of such determinism that the wiki article on the film links to. It makes very good reading.