The tricky, as yet sci-fi:ish, question of what precisely constitutes ones "personhood" is posed: Is it DNA, the body, the brain, memories, something elusive called the "soul," or a combination of these? What happens, legally and ethically, if some of these are copied or transferred somehow?

References:
https://en.wikipedia.org/wiki/Personal_identity http://www.sf-encyclopedia.com/entry/identity