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  • Ova (eggs) are made in the ovaries, and sperm in the testicles.
  • The genetic material of the ova and sperm combine to make the characteristics of the child.
  • If the ovum (egg) is unfertilised, the lining of the womb comes away (a period).
  • Sperm production requires a temperature around 2 °C lower than that of the body, which is why the testicles are housed in the scrotum.

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Reviewed on: 12-10-2023