Question

Presence of which of the following in the cells of amniotic fluid is responsible for the sex determination of the embryo.

• A. Barr Body
• B. Sex Chromosomes
• C. Chiasmata
• D. Antigen

Answer 1

The correct option is B Sex Chromosomes

The amniotic fluid contains fetal cells. A small amount of the fluid is extracted and tested to determine the presence of any genetic/chromosomal abnormality in the fetus, a process called aminocentesis. As all cells contain sex chromosomes or allosomes the test can also be used to determine the sex of the fetus. However, determination of sex is illegal.

So, the correct answer is 'Sex Chromosomes'