Determining Sex in Eggs: Understanding Fertilization
The sex of an egg is determined by the sperm. Sperm cells carry either an X chromosome or a Y chromosome. If an egg is fertilized by a sperm cell that carries an X chromosome, the egg will be female. If an egg is fertilized by a sperm cell that carries a Y chromosome, the egg will be male.
It is not possible to tell the sex of an egg before it is fertilized.
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