Today co-anchorSavannah Guthrie's mom, Nancy Guthrie, is still missing after she was abducted from her Arizona home—and it could still take days to complete DNA testing from the crime scene. On ...

In a French criminal trial, conventional DNA analysis couldn’t distinguish between twin brothers, but emerging scientific methods could help in such cases.

Advanced DNA testing using genealogy databases could take weeks or months to identify Nancy Guthrie's abductor after initial ...

Add Yahoo as a preferred source to see more of our stories on Google. Reporting from Tucson, NBC correspondent Liz Kreutz explained, "While the sheriff tells us they have received many tips from the ...