A polar body biopsy is a type of
A. amniocentesis in which polar bodies are sampled from fluids surrounding the fetus.
B. gene therapy in which a polar body is inserted into a zygote.
C. chorionic villi sampling (CVS) in which villi of the polar body are tested.
D. preimplantation genetic study in which a polar body is tested for genetic disorders.
Answer: D
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