This is what I want to clarify. I understand you to be saying the DNA, at conception, ensures it is a human life. If that is correct then in the example I gave it means Jane went out of existence the moment she absorbed Bill, as her DNA makeup changed, and that resulted in the coming into existence of another human life. If that is the case then a human life can come into existence through absorption as well as through conception. Personally, I find that explanation untenable so the only other conclusion that can be drawn is the DNA makeup of a human life can change.
If the latter is the case then we can not say a specific, unique DNA makeup at conception determines a human being. We can not use that as the defining factor or proof of a human being because the makeup of that conception can change. (I'm not referring to your specific beliefs but those of many anti-abortionists. They equate human life to human being.)
Stated another way anti-abortionist say a conception/zygote is a human life and because it has a specific, unique DNA makeup that proves it. They go on to say that whatever is present in that conception/zygote is everything that human life will be. In other words that zygote, with it's current DNA makeup, is the person it is or will eventually become.
I say that is incorrect and it's been proven to be incorrect. The makeup of the conception/zygote can change and according to anti-abortionist logic if that happens a new person comes into existence because they believe it is the specific, unique DNA makeup that determines the person.
This is important. Very important because if the DNA makeup of a conception can change it puts an end to their fundamental belief that once a conception occurs everything that determines what Jane or Bill will be is already present. They consider it a stage in a person's life, that the conception
is a Jane or Bill and nothing fundamentally will change and we know that is not the case.
As you mentioned in answer 3, "I am saying it may not be and working to find out where others draw that line and why."
This is another reason why it's so important to discuss the conception/absorption/unique DNA issue. If one believes the moment of conception results in a person, that the cell/zygote is basically a "miniature person", there is no room to draw a line.
BTW, thanks for the response.
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