Better Health Channel
  • Multiple births are more common due to the advancing average age of mothers and the rise in assisted reproductive techniques.
  • Twins account for more than 90 per cent of multiple births.
  • To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information.
  • To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.
  • Triplets are usually a combination of the types of twins, with a set of identical twins (two) and a fraternal (one) triplet.
  • If you are carrying more than one baby, it is best to give birth in hospital, rather than at home, as multiple births are higher risk.

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Reviewed on: 31-08-2014