Question

How is the sex of a an unborn child determined?

Answer 1

the sex of a baby is determined by its chromosome make-up at conception. an embryo with two x chromosomes will become a girl, while an embryo with an x-y combination results in a boy.

Answer 2

• Humans have 23 pairs of chromosomes, out of which 1 pair is called sex chromosomes termed as X and Y.
• Males have one X and one Y chromosome and females have two X chromosomes.
• The unfertilized egg contains one X chromosome and if a sperm containing Y chromosome fertilises the egg, then the baby is a boy.
• If a sperm containing X chromosome fertilises the egg, then the baby is a girl.

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