>choice of the individual during the first trimester there is no individual - the fetus brain isn't even at the fish level. There is no electrical activity in

>choice of the individual during the first trimester there is no individual - the fetus brain isn't even at the fish level. There is no electrical activity in the fetus brain at all until the week 6. In response to the comment below - genetically an egg and sperm combined in the lab is different from either donor, yet it doesn't make it into individual. Or if you just take 2 (or 3, ...) DNA and recombine on computer, and actually synthesize that DNA - genetically distinct, yet definitely not an individual.