Answer:
a) Any genetic disease b) gender of the child/fetus and c) test the blood group type and possible complications
Explanation:
The three things that can learn about a fetus by taking a sample of the mother's blood are as follows -
1. The blood of mother consists of traces of amniotic fluid. This fluid has cells of fetus. Once these cells are extracted the exact gender of the fetus can be determined.
2. Based on the fetal cell study, the genetic diseases can be determined and necessary precautions can be taken
3. The blood of the fetus can be tested to determine the presence and absence of Rh factor in a particular blood group.
