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zanyu zanyu
wrote...
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13 years ago
So the gametes come together and you have a zygote. As soon as that zygote splits, is it no longer a zygote?
In that case, are humans zygotes for only a very short time?
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wrote...
13 years ago
its like this zygote->embryo->foetus->child! it stays as a zygote for only a few days
wrote...
13 years ago
A zygote is a single cell resulting from fertilization... once the cell undergoes cell division (usually mitosis), then is in an embryo.

In response:  Sorry for my slightly simplified answer regarding the term embryo.  Technically, blastulation (the process that forms the blastocoel within the blastocyte) is occurring in an embryo.  This stated technicality of implantation does not uniquely define zygote vs. embryo.

Zygotes are simply the single cell resulting from syngamy.  Once cell division occurs, it is no longer a zygote. Period.
wrote...
13 years ago
Sorry, a zygote is a zygote in humans until implantation.  Only bible thumpers think a zygote is a baby.
wrote...
13 years ago
A Zygote becomes a Blastocyst before it becomes an Embryo.
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