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DNATechnology160-page16

DNATechnology160-page16 - Biotechnology 16 Prenatal...

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Biotechnology - 16 Prenatal Analysis Prenatal analysis can screen for several abnormalities. There are risks to doing so, however. The decision about what to do if severe abnormalities are detected is one of the most difficult any person can face. Amniocentesis obtains fetal cells from the amniotic fluid during the14 th to 17 th week of pregnancy and requires several weeks to culture the sample. Amniocentesis Chorionic Villus Sampling Chorionic villus samples fetal tissue from the placenta. It requires more cells than amniocentesis but can be done earlier in the pregnancy. Ultrasound can determine several characteristics of the developing fetus Fetoscopy uses a thin viewing scope and fiber optic light source inserted through the uterus to view the developing fetus Pre-Implantation Analysis – If eggs and sperms are used for in vitro fertilization, cells from very early development can be examined for certain chromosomal abnormalities, such as Huntington's, muscular dystrophy and cystic fibrosis.
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