Yeah, the bible has only a smattering of discussions about things like genetic engineering, or for that matter, subatomic particle physics (I like the lively discussion between God and Abraham in Genesis about the differences between top, bottom and charmed quarks and how their spin affects their charge, but it really didn't go far enough for me).
You might be right though, Jesus' parable about how a woman's womb is like the salad bar at Applebees, where you can take what you want as long as you eat what you take implies that you should be able to choose your baby's genetic make up.
Too bad Applebees doesn't actually have a salad bar though.....