Apologies. I missed the context that you were replying to.
Yes, DNA does not change. It is a human fetus, nobody disagrees with that (and if they do they are wrong)
I think the point is whether we defend it as if it were a human person.
The edges of life are fuzzy; when do we turn off life-support? Who makes that decision? Do we allow otherwise healthy people commit suicide. Or support that decision? Do we restrict their bodily autonomy? Or do we only allow terminally ill people commit suicide??
All these questions are at the edge of life. The questions at the other end are equally valid. When does it become worth protecting?
These are not easy questions. And while we can look at individual cell collections, or cognitive abilities of a collection of neurons (i which case i will start comparing adult cattle to new born babies) we can look at it another way - as a process, as a whole, not just a single part of the system, in a single stage - this can ive us a different perspective.
But it is rather hard. The fetus is part of a process which can lead to a human person, that person may be healthy, and they may be part of a society. Many factors may impact their quality of life, not limited to whether their mother choose to bring them into the world, or was forced to.
Their quality of life may depend on social supports, local community, familial love, economic circumstaces, and too many things to count. In most cases, however, the potential mother is in the best position to weigh up these questions. If the potential father is involved and wants to raise a child, then this is information the potential mother will likely consider.
I am never in a position where i can make that decision for a woman. It is never my body at risk, or my future child whose quality of life is at stake.
I can argue for a socialist utopia (and have done here) and for a universal basic income... And many ofher things which will affect that quality of life (like migrant rights, and comprehensive sex ed) but i can't make these things a reality - and even if they become reality, it should still be the woman's choice, even if that teality changes the information she bases that choice upon.
I believe all these thigs are pro-quality of life.
I take it you agree we should draw a line somewhere. Two extremes exist - those that say a new born can't really be shown to he self-aware and thus doesn't deserve to be considered a person, and those who argue that once a zygote is formed it has a soul and must be protected.
If you live in the real world, i presume you take a position somewhere between these two extremes.
Is that fair?