Biology · Principles of Inheritance and Variation
Several prenatal diagnostic methods are used for fetal chromosomal analysis. Which of the following CANNOT be used directly for obtaining fetal cells for chromosomal analysis?
- 1Fetal umbilical Doppler velocimetry✓
- 2Percutaneous umbilical blood sampling (PUBS)
- 3Chorionic villus sampling
- 4Amniocentesis
Correct answer
Fetal umbilical Doppler velocimetry
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