And they were less likely to have a stillbirth, the loss of a fetus after twenty weeks.

VOA: special.2010.08.11

For example, genes direct formation of the fetus's brain at set times in a woman's pregnancy.

VOA: special.2010.03.23

And,many women who are pregnant take tests to learn about the condition of the fetus.

VOA: special.2010.03.23

What if the fetus is found severely affected by a faulty gene?

VOA: special.2010.03.23