NM, I'm partly responding to your assertions about "life" based on what you said in the other thread, which were totally wrong.
I'm a biology instructor, trust me I understand what a life cycle is. But you are ALL misusing biology to state that personhood MUST begin at syngamy (that is gamete fusion).
Because at syngamy you have a brand new, living individual specimen. Biology classifies that individual as a human being. It does not define it as a cell from a human being, it defines it as an individual human being. Do you deny that? Does biology require that an organism have more than one cell? No. Does it require that an individual be fully, or even partially developed before it can be called an organism? No. Classification is not concerned about any of those things. The single-celled human individual is a human individual at it's earliest stage of development. If you doubt that, have a look at the descriptions of the human life cycle on the biology cites.
Its a brand new combination of human DNA in a living cell. It has the potential to develop into one new individual, several new individuals, or nothing at all.
Show me a biology text that denies that that new diploid cell is anything other than an individual of the human species.
Fully 1/3 of those combinations cannot possibly develop into an adult (or even an early embryo) due to chromosomal abnormalities and spontaneously abort.
Early death in no way invalidates the life of the individual. Can you find something in a biology text that says otherwise?
Could you decide that, that one cell, no matter how it develops (or doesn't) is deserving of a right to life, same as a baby or adult? Certainly, you can make that judgment.
No I can't, but God can. That is why the founders claimed, and I agree, that life is an inalienable right - because it is endowed by our Creator.
But biology itself is SILENT on judgments like that.
Biology just makes clear when the life cycle of a human specimen begins. That makes it easier for us to realize that human zygote is a human individual. Which leads us to the ethical question in the first place.
Biology gives us information about how things work, its completely wrong to say biology TEACHES a moral position. You can make a moral argument for implantation, heartbeat, brainwaves, quickening, even birth using biology.
I haven't heard one. To make those arguments, you'd have to somehow show that prior to that moment, the individual is somehow NOT a human being.
So no you cannot say biology TEACHES personhood from conception.
Quote me saying that
All I have claimed that biology teaches us is at what point the human life cycle begins - when a new human specimen begins its individual life cycle.
You must explain WHY a single cell, even the first cell of a potential new individual should have the same right to life as a person.
Because that special diploid cell is a human individual until you find a way to prove that it isn't.
If you're really saying that personhood starts at conception, you're arguing that it is human DNA alone that makes something a person, because that's really all that is different between an egg and a zygote. We are more than just our DNA.
You are a biology teacher. You know that that particular diploid cell is unique. It isn't like your cheek cells, or even like your stem cells. That diploid cell that is formed by the joining of male and female gametes of the same species is unique. It isn't just DNA, it's a brand new specimen of the species.
I'm a biology instructor, you can't get this human cell is equivalent to a baby or an adult from this is the first cell of something. That's a moral and ethical judgment, biology does not teach morals or ethics, period.
That single-celled human individual IS a human being - it is exactly equivalent to any other human being in value as well as in classification. The moral judgment is our own - what does it mean to be a human individual? That isn't what I'm pointing to here - I am pointing to the simple, bare fact of zygotes being individual specimens of their species. A human zygote is classified by biology as a human being - a specimen of the species homo sapiens sapiens.
After that, we must leave biology behind (go check my posts, you will find that I am consistent, if not explicit, in this position) to make the claim that every human being is a person.
Once I finally get all the words and minor details all right, do you suppose you can start treating my arguments like actual arguments? You are a biology prig. My point has been valid all along, even without having all of the precise wording and insignificant details correct to your absurd standard.