From the fetus: The fertilized egg develops the placenta which implants into the uterus..Usually the back wall.
Answered 4/3/2012
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Baby: The mother provides an intricate uterine lining that is ready to receive & supply the nutrients for the fetus. The genes within the baby's chromosomes provide the directions to the developing embryo on how to create a placenta using these nutrients.Without a proper uterine lining, nothing can develop.If the baby's genes don't have the right information, the conceptus sheds
Answered 11/5/2016
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