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A member asked:
Does a pregnant woman have any effect on the fetal dna?
4 doctors weighed in across 2 answers
"50% solution": A pregnant(not surrogate) mother contributes 50% of the chromosomes to her fetus.
Answered 7/5/2012
5.8k views
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Not sure of question: Are you referring to the fetal DNA test in maternal blood for Down syndrome and other trisomies? If so, that testing is specific for fetal DNA, not maternal DNA, so a mother could not influence the results, which are 99% accurate.
Answered 6/23/2015
2.7k views
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