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Signs of pregnancy

An average pregnancy usually
lasts 40 weeks

All pregnant women produce a special hormone called gonadothrophin
(HCG) as soon as the zygote has implanted in the uterus which shows up
in the blood and urine.
Estimated date of delivery- add 9 months and 7 days to the…

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Multiple pregnancies ­ when more than one foetus develops in the
Identical twins-If a zygote splits completely into 2 parts, each part
develops into an identical baby. They have:
o identical genes
o look the same
o have the same blood group
o are the same sex
o And…


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