The DNA of 10 families exposed to the ’80s violence and 22 families to the 2011 conflict was compared to the genetic material of 16 families who left Syria before 1980, avoiding decades of unrest.

But how do these DNA tests work, and how can they tell if two people are related to each other?. A genetic test typically involves submitting a saliva sample to a laboratory. Scientists then ...

Customs and Border Protection has swabbed the DNA of migrant children as young as 4, whose genetic data is uploaded to an FBI-run database that can track them if they commit crimes in the future.