family history

Identical twins

Identical twins result from a pregnancy in which a single egg divides into two embryos after fertilisation. This means the two babies in your womb share a placenta and an amniotic sac, though some cases of multiple placentas have been reported. The egg usually divides between the first two and eight days after fertilisation, but […]

Fraternal twins

Fraternal twins result from a pregnancy in which two eggs are fertilised during conception. Two eggs means that each baby will have its own placenta and its own amniotic sac. This lowers the risks of the possible complications associated with fetuses who share these two important lifelines during pregnancy. Fraternal twins are the most common […]

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