No one is sure why identical twins occur, but a dominant maternal gene may cause a single fertilized egg to split. Fraternal (dizygotic) twins are easier to explain because they tend to run in families or occur when fertility treatment boosts the number of eggs released or when two or more fertilized eggs are returned to the uterus during IVF (see page 45). Th w t o x w m m k o m ve a at w o w m y o y ve wh o b wo w w o g e y a t o r m by.
Th e t mu g be more difficult, and put you into the category of a " hi gh risk " pregn ancy. In the first trimester, o m o l e wh t m y m m w l such as morning sickness, will be exacerbated w w . w o pren at al c are , your b abie s will thrive.
Many women, especially those who have had IVF, e ke y e x m e by. Yo m y ve vat ve m o
( HCG)—the hormone detectable in a pregnant
woman's blood or urine about 10 days after conception . An ultrasound scan will confirm that o x w m . wo wo it' s twins! If it can also be seen that they are of a e x o w w at at m g
EXPECTING MORE THAN ONE
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Prior to planning pregnancy, you should learn more about the things involved in getting pregnant. It involves carrying a baby inside you for nine months, caring for a child for a number of years, and many more. Consider these things, so that you can properly assess if you are ready for pregnancy. Get all these very important tips about pregnancy that you need to know.