Which technique can be used to identify Down syndrome in a developing fetus?

Question

Quizplus · Accepted Answer

Chorionic villus sampling (CVS) is a prenatal diagnostic technique that can be used to identify Down syndrome in a developing fetus. It involves taking a sample of cells from the chorionic villi, which are small finger-like projections on the placenta, and testing them for chromosomal abnormalities such as an extra copy of chromosome 21, which is the cause of Down syndrome. PCR, Southern blot, gel electrophoresis, and RFLP are all techniques used in molecular biology for analyzing DNA and RNA, but they are not typically used for prenatal diagnosis of Down syndrome.

Which Technique Can Be Used to Identify Down Syndrome in a Developing