Dictionary of Human Evolution and Biology

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Preimplantation Genetic Diagnosis

Procedure in which in vitro fertilization is performed and one of the eight cells of the preembryo is removed and genetically analyzed in order to detect any defective genes. If none are found the seven-cell ball is implanted in the mother’s intrauterine lining. Aka preimplantation genotyping.

Cf. chorionic villus sampling and amniocentesis.

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