View Poll Results: Is a single celled human zygote an 'organism'?

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  • Yes, a single celled zygote is in fact an organism

    99 51.30%
  • No, a single celled zygote is not in fact an organism

    94 48.70%
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Thread: Is a single celled human zygote an 'organism'?

  1. #171
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    Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by Chuz
    Ian,.. did you bother to also look up the word "existence?"
    Yes.
    Existence:
    –noun
    1. the state or fact of existing; being.
    2. continuance in being or life; life

    Definition #1 would be redundant in the context of biology, as all things that might be confused for an organisms are capable of this - oh, and if you use this context, you have to include sperm and skin cells as being organisms. Hence my use of the second definition; life.

    Any comment on the other dictionary bits?
    Last edited by iangb; 01-29-10 at 05:49 PM.
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    Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by phildozer9121 View Post

    4) In-vitro fertilization, if you care to note its name, is just that. Fertilization. Not growth. a fertilized egg won't grow on a petri dish because it's just not an organism, it can't grow by itself. like any other organism would be able too in their respective preferred environments.
    [ame="http://en.wikipedia.org/wiki/In_vitro_fertilisation"]Selection[/ame]
    Laboratories have developed grading methods to judge oocyte and embryo quality. Typically, embryos that have reached the 6-8 cell stage are transferred three days after retrieval. In many American and Australian programmes[citation needed], however, embryos are placed into an extended culture system with a transfer done at the blastocyst stage at around five days after retrieval, especially if many good-quality embryos are still available on day 3. Blastocyst stage transfers have been shown to result in higher pregnancy rates.[1] In Europe, transfers after 2 days are common. Preimplantation Genetic Diagnosis (PGD) procedures may be performed prior to transfer.[2]

    Question: If the zygote (an organism) can't live in a petri dish,... how can it reach the "blastocyst" stage of it's life,... while still being in the petri dish?

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    Re: Is a single celled human zygote an 'organism'?

    Reaching the blastocyst stage isn't exactly baby stage is it? If we could just sprout children why bother with the pains of childbearing? After the food source of the egg is exhausted, it ends up as just a cluster of cells. It can't take in its own food. it can't metabolize, so it can't grow, ergo, it's not an organism.
    Haha. Panty Hawk. I would watch that show.

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    joke Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by phildozer9121 View Post
    Reaching the blastocyst stage isn't exactly baby stage is it? If we could just sprout children why bother with the pains of childbearing? After the food source of the egg is exhausted, it ends up as just a cluster of cells. It can't take in its own food. it can't metabolize, so it can't grow, ergo, it's not an organism.
    If it can't live or grow,... how does it go from a one celled zygote to a multicellular embryo? (again,... while still in the petri dish)

  5. #175
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    Re: Is a single celled human zygote an 'organism'?

    As I see it, it doesn't matter whether a zygote is an organism or not.
    It doesn't matter if a zygote, or any form of it before or afterwards is alive, dead, or somewhere in the middle.

    Still, no one would know when the future human actually became...human. And I don't mean in the biological sense. I mean in the sense of "sentience", or whatever. It’s biological “aliveness” has little or no effect on that debate.
    Education.

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    Question Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by The Mark View Post
    As I see it, it doesn't matter whether a zygote is an organism or not.
    It doesn't matter if a zygote, or any form of it before or afterwards is alive, dead, or somewhere in the middle.

    Still, no one would know when the future human actually became...human. And I don't mean in the biological sense. I mean in the sense of "sentience", or whatever. It’s biological “aliveness” has little or no effect on that debate.
    If we can't agree on the biological beginning of a being (horse, goat or any other animal including man),... how are we expected to agree on any of the other (some metaphysical) aspects?

    I make not bones about my conclusions that the Constitutional applies to the biological "human being" as a "person" and not the metaphysical aspects.

    Therefore,... the biology as it applies to when a new human individual is created,... matters.
    Last edited by Chuz Life; 01-29-10 at 06:30 PM.

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    Re: Is a single celled human zygote an 'organism'?

    Again,

    After the food source of the egg is exhausted, it ends up as just a cluster of cells. It can't take in its own food. it can't metabolize, so it can't grow, ergo, it's not an organism.

    Just like when your skin cells (which we have all agreed are not organisms) can't grow if they don't have energy.
    Haha. Panty Hawk. I would watch that show.

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    Question Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by phildozer9121 View Post
    Again,

    After the food source of the egg is exhausted, it ends up as just a cluster of cells. It can't take in its own food. it can't metabolize, so it can't grow, ergo, it's not an organism.

    Just like when your skin cells (which we have all agreed are not organisms) can't grow if they don't have energy.
    What do your professors say when you tryto tell them that a zygote, embryo or fetus is not an organism?

    Do you think you can you get one of your professors to join the forum?

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    Re: Is a single celled human zygote an 'organism'?

    You know I was in my bio lecture today and I almost raised my hand to ask my professor what he thought, but I decided that it really wouldn't be appropriate to ask that in a lecture of 500 people
    Haha. Panty Hawk. I would watch that show.

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    Re: Is a single celled human zygote an 'organism'?

    Quote Originally Posted by phildozer9121 View Post
    You know I was in my bio lecture today and I almost raised my hand to ask my professor what he thought, but I decided that it really wouldn't be appropriate to ask that in a lecture of 500 people
    Yeah right. Like the forthcoming response wouldn't have benefitted the entire class.

    No balls.

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