Key term for OCR GCSE Biology B, used in Gene Technology Applications.
An early prenatal test (performed at 10–14 weeks) involving sampling placental tissue to detect genetic abnormalities, carrying a 1–2% miscarriage risk.
Chorionic Villus Sampling (CVS) appears in OCR GCSE Biology B revision content for Genetics and the Genome, especially Gene Technology Applications and Genetic Testing and Medicine.
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