In _____,tests are made on some of the cells that attach the amniotic sac to the wall of the uterus.
A)preimplantation genetic diagnosis
B)amniocentesis
C)chorionic villi sampling
D)karyotyping

Question

Quizplus · Accepted Answer

Chorionic villi sampling involves taking a sample of cells from the chorionic villi, which are projections from the placenta that attach to the wall of the uterus. Tests can be done on these cells to diagnose genetic conditions in the developing fetus. Preimplantation genetic diagnosis (A) involves testing embryos before they are implanted in the uterus. Amniocentesis (B) involves taking a sample of the amniotic fluid, which surrounds the fetus in the uterus, to test for genetic conditions. Karyotyping (D) is a technique used to examine the chromosomes of cells, but it can be done on cells from various sources and is not specific to any particular prenatal testing procedure.

In _____,Tests Are Made on Some of the Cells That