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Question

What determines the sex of a child


Solution

At conception, gender is determined by chromosome characteristics - and it will be the male
(or rather the male's sperm) that dictates whether the baby will be a boy or a girl.

Prior to conception, the unfertilized egg carries an X chromosome while the sperm can carry either an X or a Y chromosome. The gender of the baby comes down to one simple event:

  • If the sperm carrying an X chromosome fertilizes the egg, a girl will be conceived.
  • If the sperm carrying a Y chromosome fertilizes the egg, a boy will be conceived

Biology

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