You No they do not and you do not understand the biological difference between a sperm and a zygote as I pointed out. As I said, when you can no longer debate on the merits. And the protein, keratin, that makes up a fingernail is not alive. It's a chemical substance. If I were you I would stop digging your holes with your biologically fallacious statements. A human zygote remains a human at that stage of a human's life. A life that began at it's conception. Facts you cannot refute.