DNA testing as we know it has been around since the 1980s, when the development of PCR finally gave scientists an accurate, reliable way to test if two individuals were related... Today, there are several commercial companies that can perform a paternity test and settle family disputes, using little more than a cheek swab taken from the child, and their alleged father.
But what happens if you need answers more urgently—before the baby has even been born? That's where a prenatal DNA test comes in.
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