What may happen if embryos are deemed persons at fertilization?

Philosophical issue. On this earth, life only comes from life. A living being only comes from living material, but the problem occurs when we humans try to agree on when something is "alive", and at what point that "alive" something can be called a person, an animal, or a plant. There will always be disagreements, because very important rights, privileges, and laws apply when that "alive" something becomes a person.