Many of us do not agree with the definition quoted if the implication is that life begins at some point after fertilization (such as at implantation, etc.). Opinions vary of course but for those trying to understand the primary reason for opposition to IVF, that’s it. That is, more embryos are created than used and of the ones used, many are killed off through “selective reduction”.
“Many of us do not agree with the definition quoted if the implication is that life begins at some point after fertilization...”
Not every fertilized egg, embryo, ever makes it to implantation. That is why adult women have about 600 eggs stored away for potential use.
Bingo!
Regards,