I must've missed that particular episode...(grin)
One word on the original subject, it's incensed me that there was even a debate
about what to do with "Tuvix". He wasn't some kind of new life-form, in fact he wasn't even an individual in the true sense. "He" was the mere result of an accident involving two real individuals
who became accidentally merged. Neither of the two seperate selves would have wanted to exist in this particular state, which has to be considered first. Seperating them again is merely restoring their normal existence to them; no-one is being "killed". No-one had been conceived
in the first place.