I'm going to drop one. You choose.
If you really, truly believe that a zygote is the same as a baby then it would be impossible to choose.
You should have to flip a coin.
That's how impossible the decision would be.
Shot in the dark, you saved the baby.
Because you're aware there's a difference.
Now admit it.
ETA- for everyone trying to find loopholes and such, lets clarify. I'm holding YOUR child and YOUR zygote. If you don't choose then I drop them both into hydrofluoric acid and they're both done for. Forget your variables, it's a simple question. Does this clarify things any better? I just need an answer of which you would choose.