[yatros from flatwater]

...""If you cross a Barlow and Jessop, you stand a high risk of getting this condition," Tarby says.

..."Aleck says the fact that so many people in the polygamist enclave are blood relatives of the founding Barlow and Jessop families "shows the magnitude of the problem."

So, the judge in the FLDS "abuse" case is ordering DNA testing in order to find evidence of who bred with whom - when these folks are more inbred than the royal families of Europe? All the DNA will be closely matched, and therefore, inconclusive.

[najida]

Closely matched, yes,
but still parental DNA can be determined. Which will be conclusive in determinining not only who’s the parents of which child, but in turn will lead to a child that was birthed via an underage mother by a far older father.

What I’m also betting on is that a few of the children, while related, will not have a parent on the compound, but in another state or country even.