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Once the egg is fertilized it can not change be and be fertilized by someone else. The uterus is closed and no sperm can get in to do so even if it was possible.
It is necessary for an egg to be fertilized so the egg can hatch.
A fertilized egg cell is when a sperm enters an egg. The result is a fertilized egg cell, or a zygote.
Yes, a zygote is a fertilized egg.
The gametes, or "sex cells" - the sperm and ovum (egg) - become the fertilized egg (zygote) when they fuse.
A fertilized egg implants into the Uterus.
The sperm doesn't have to. Once the egg is fertilized it stays fertilized.
When a bird's egg is fertilized, a chick is developing inside.
A fertilized egg cell is when a sperm enters an egg. The result is a fertilized egg cell, or a zygote.
No
The fertilized egg becomes an embryo and later becomes a fetus.
A fertilized egg is an egg that is fertilized - in short terms, it can be incubated and a chick will hatch from it after incubation.