And how can you prove this with the science you are quite interested in other than by just arbitrarily defining life as the "moment of creation of unique DNA" which would just be begging the question by assuming that which you seek to prove.
I see. And you would define the beginning of life as what and when and based on what authority? Just curious.
I am not all that religious based on the fact that all religions are creations of self interested men (or women). Should I be a Methodist, Calvinist, Catholic or Mormon. Which of those groups are divinely inspired? Science is merely a logical construct for ordering the collection of data and the examination of matter. It makes no pretense of being the end all of existence although some of its practitioners like Dawkins try and do so. Atheism itself is a religion as practiced today.
I’m not attacking your beliefs but I likely do not share them. I’m certainly not trying to convert anyone, I’m just explaining where I’m coming from.
Speaking as a biologist, I will say that there cannot be an arbitrary point at which human life begins. Life exists as a continuum; it can end, but it doesn't begin.
The definition of life is that biological processes are occurring. There are biological processes in the ovum, in the sperm, and in the zygote that results when they fuse. Since all of these entities are biologically quite active, they are all alive. And when each of these cells comes from a human, they are all human.
Perhaps a more meaningful "start" point would be when these living cells take on the characteristics of a unique human being. And that would be soon after fertilization--I would select the first cell division as the point at which a unique human exists, although that point could arguably be moved back to the moment of conception. The reason I wouldn't choose conception as the start point is that the fusion of an ovum and a sperm don't necessarily lead to a viable zygote; sometimes, they fuse and, for whatever reason, the process that results in a growing zygote fails.