What I mean is....the new organism does not possess the same dna as the sperm - nor does it possess the same dna as the egg.
Rather - it possesses the new arrangement - the DNA that will follow that new life for the rest of its life.
Yes - the new DNA code is comprised from the mother and father - but is not the same. It is unique to this particular life.
It is the point in time we can point to and say “there”! - That person’s origin is here!
That is when human development begins. We all learned this in science class.
Yes....this life will continue to grow a few days later as it implants into the uterine lining.
If implantation does not go well, it will die.
That does not mean it was not alive prior to implantation.
The new organism DOES possess the exact same DNA as the sperm AND it does possess the exact same DNA as the egg. That was my point.
The only thing different is that now the DNA from the sperm and the DNA from the egg are in physical proximity within the same plasma membrane.
There is nothing magical about DNA. And there is no DNA change associated with combining the haploid genome of the sperm with the haploid genome of the egg.