Souls (our true selves) don't come from physical sources. They are attached to bodies sometime in the growth process. So, they come from the same place that souls come from when a baby is born.
God created us in His image and likeness. That makes us inherently non-physical, spiritual and immortal sources of creation. Baby gods. But because of the forbidden fruit -- dichotomies of ego -- we have forgotten who we really are.
We could run out of souls (true, spiritual selves), but that could happen just as easily to babies as it could to clones.
My research into Genesis and science reveals that God created Noah's flood to eliminate a genetic threat to the future of Homo sapiens. If scientists in the laboratory start monkeying around with human genetic code, then they may be in for a heavy storm warning -- meteor showers!