Concept:
Genetic disorders in a developing fetus can be detected using prenatal diagnostic techniques. These methods involve analyzing fetal cells or tissues to identify chromosomal abnormalities or inherited diseases. One of the most widely used procedures is amniocentesis.
Amniocentesis is a medical procedure in which a small amount of amniotic fluid is withdrawn from the amniotic sac surrounding the fetus. This fluid contains fetal cells that can be analyzed for:
- Chromosomal abnormalities (e.g., Down syndrome)
- Genetic disorders (e.g., thalassemia, sickle cell anemia)
- Certain metabolic disorders
Explanation:
During pregnancy, usually between 15--20 weeks, a thin needle is inserted into the uterus under ultrasound guidance to collect amniotic fluid. The fetal cells present in this fluid are cultured and examined for genetic abnormalities.
Thus, the method used for detecting genetic disorders during pregnancy is
amniocentesis.