Which of the following cannot be detected in a developing fetus by amniocentesis?
Correct answer: B. Jaundice
- A. Down's syndrome
- B. Jaundice
- C. Klinefelter's syndrome
- D. Sex of the fetus
Explanation
Amniocentesis is a fetal sex determination test in which amniotic fluid containing fetal cells that surrounds the developing embryo is extracted and cells are tested for chromosomal pattern to identify genetic disorders, if any. Jaundice is not a chromosomal disorder and thus cannot be tested by amniocentesis. Amniocentesis (also called amnio) is a prenatal test that takes amniotic fluid from around your baby in the uterus (also called womb). The fluid is tested to see if your baby has certain health conditions. A prenatal test is a medical test you get during pregnancy.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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