While some pregnancies are an unexpected surprise, many are planned for months, or even years, before they happen. For those with an inkling that they want to be in a pregnant way, there are vitamins to take, lifestyle changes to make, and tests to be done. Genetic testing has come a long way, now able to screen for 2,200 different diseases.

We know you know your prenatal tests, let's see how well you understand genetic testing.