Your example of the potentiality of sperm and egg lack the aforementioned 46 chromosomes, so there seems to be literally a quantitative difference in your example. Moving on to the Texas bill that prompted Perry's comment, Is a 20 week gestational limit too much of a burden on the poor women of Texas? Can't they count on their fingers and toes to 20 given the gestational limits in much of Europe are under 20 weeks? Do you accept any gestational limit to abortion rights? How about sex selection abortions? Are you a full supporter of Eugenics? Do you stand with Princeton's Peter Singer and suggest a chimp may have more innate value than a down's Syndrome child if the chimp is deemed as more self aware?