The issue isn't whether a body part such as sperm or ovum or zygote is biologically human or alive. Each cell has a full complement of DNA. In the context of abortion, totipotency goes to the question of potential, not certainty of the end goal, which under perfect conditions produces a fully formed, viable person. The core issues are at what point does that occur in both a biological and legal sense, and who is legally in charge of the situation in the interim? I come down squarely on the woman's side. The woman is a legal person with all that implies. She has a right to privacy and bodily integrity. Is a zygote a person in the legal sense? No. Nor is a fetus or an embryo. In Roe v Wade, the Court decided that the state has an "important and legitimate interest in protecting the potentiality of human life" from the point of viability on, but that prior to viability, the woman's fundamental rights are more compelling than that of the state. I adhere to that position.