Amniocentesis and chorionic villus sampling are prenatal procedures that detect congenital abnormalities. Classify each statement as a characteristic of amniocentesis, chorionic villus sampling, or both. True for amniocentesis True for chorionic villus sampling True for both Answer Bank requires cell cultures used to prepare a fetal karyotype conducted as early as 10 weeks after conception
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Amniocentesis and chorionic villus sampling are prenatal procedures that detect congenital abnormalities. Classify each statement as a characteristic of amniocentesis, chorionic villus sampling, or both. True for amniocentesis True for chorionic villus sampling True for both Answer Bank requires cell cultures used to prepare a fetal karyotype normally conducted about 16 weeks after conception uses placental tissue conducted as early as 10 weeks after conception may increase the risk of fetal limb defects
Adi S.
a. The first indication of a genetic disease comes from genetic testing done prior to conception. b. There are two methods of obtaining prenatal tests to collect fetal cells. c. Amniocentesis is when a sample of amniotic fluid from the uterus of a pregnant woman is collected by passing a long needle through the abdominal and uterine walls in order to collect fetal cells. d. Chorionic villus sampling is when a sample of fetal cells is collected from the region where the placenta will develop. e. In adults, white blood cells are used for genetic testing. f. Once the DNA has been isolated, geneticists can either look for chromosomal changes or specific alleles that indicate a disease.
Madhur L.
Which of the following accurately describes the pros and cons of obtaining a fetal sample by amniocentesis vs. chorionic villus sampling for karyotype preparation? Select one: a. Compared to chorionic villus sampling, amniocentesis can be done sooner, but is more risky because it takes a sample from amniotic fluid. b. Compared to chorionic villus sampling, amniocentesis can be done sooner and is less risky because it takes a sample from amniotic fluid. c. Compared to amniocentesis, chorionic villus sampling can be done sooner and is less risky because it takes a sample from the placenta. d. Compared to amniocentesis, chorionic villus sampling can be done sooner, but is more risky since it takes a sample from the placenta.
Shaiju T.
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