I may be reading too much into this, but one little thing is bothering me about this fantastic show.
Why does everyone seem to accept the hybrids, often spouting that it's 'still their mother' just changed. As far as I know isn't the original person dead and rotting somethere while this hybridised clone goes about with all their memories thinking they are them?
I considered the whole idea that they simply switch conciousness into a new body, but that doesnt work when you've got Daves unfinished hybrid running about with his memory at the same time as him still being alive... This simply shows that the original and their hybrid are two completely different beings, one designed to replace the other? Am I wrong?