Not fused? I don't think you actually understand how fetal development works. The placenta literally burrows into the uterus, fusing the tissues together. In fact, if you go to the wikipedia article on placenta, it uses the word FUSION to describe the inseparable connection during development. The placenta and umbilical cord carry the nutrients pumped to it from the mother's circulation to the baby. Oxygen, vitamins, amino acids, and other basic building blocks required for development do not spontaneously come from the baby, nor are they magically produced by the placenta.
You really don't know much about this topic on which you proclaim understanding, do you?
So no, they are not individual separate beings.
You seem to continue confusing the words UNIQUE and SEPARATE. These are not the same, and one does not denote the other. The placenta has its own DNA that is different than the mother. It too is not a separate unique being.
You either read something that I didn't say or I wasn't clear enough in what I did say. What I said was that
fetus and mother are not fused. Are they joined together via the umbilical cord and placenta (which are fused)? Yes. Joined together does not mean they are one entity. Fetus and mother are two separate entities, two separate beings, one growing/developing within the other, not two beings fused together as one being. They are two separate beings.
If they were not individual separate beings then when a woman aborted a fetus part of her would also die/be changed/cease to be. When a woman has an abortion the only thing that no longer continues to exist is the fetus (a developing being), which is a separate individual, a separate human being. It is unique in that no other exactly like is has ever been or will be again.
If they are
one being why was Scott Peterson charged with
two counts of murder?
I still think you're missing something vital here. OK let's backup. The umbilical cord is part of the fetus. It's directly connected. On the other end, it's directly part of the placenta. The placenta is fused to the uterus. OK now I know this is tricky logic here, but if A is fused to B, and B is fused to C, then A is fused to C via B. The fetus is fused to the mother by way of placenta, which happens to also be fetal in origin. So to summarize, a structure directly carrying fetal DNA is directly fused to a structure carrying mother's DNA. If you sever any part of that connection, the fetus dies.
PUT ANOTHER WAY: IF YOU SEPARATE THE TWO AT ANY POINT, THE FETUS DIES. So you should probably stop claiming they are separate. You can still use the word unique, just realize it has nothing to do with anything being individual or separate.
As for what happens when a woman has an abortion: she loses both the fetus and the inner part of her uterus that was supporting it. Everything involved in the fusion goes, mother and fetus alike. Luckily, women can regrow that lost tissue. Or do I need to explain menstruation as well?