Good grief! Where did the unknown DNA come from if one of the parents did this?
Excellent question. The trace DNA that was found did not exonerate the Ramsey's, it simply makes known a previously undetected DNA source at the scene. It was from skin (not semen) so most speculate it was on the panties JonBenet was wearing at the time it was packaged. Keep in mind, JB had been redressed, wearing different clothes from what she went to bed in---according to Patsy. That package of oversized underwear disappeared and hasn't been found. (The Ramsey's admitted to buying the package, even though they were too big for JB.) There are so many odd facts in this case, with the pineapple in JB's stomach being one of the strangest. As I mentioned in an earlier post, this case is full of rabbit trails and can make you go a little crazy trying to track down what's true and what isn't. There are basically two camps in this case: RDI, Ramsey's Did it, and IDI, Intruder Did It. The strongest argument the IDI camp has is "What's the motivation? Mom's don't kill their kids". Au contraire, parents kill their children quite often. However, most cases are not as salacious as this. Tread lightly when looking into this case. It can quickly become all-consuming. One thing's for sure, that little girl has NOT received justice.
There was speculation from one of the investigators, that the DNA was from the factory where the underpants were made. The pair she had on when she was found were new out of a package in the home, and were too large...or that she had borrowed new underpants from a friend (she had lots of bathroom issues). I can’t remember which it was.
Incidentally, this investigator wrote a book (i read it a while ago) and came to the conclusion that Jon Benet wet her bed, mom was really irritated, and while cleaning her up, mom either shoved her or yanked her, causing her to hit her head on the tub (or sink?) in her bathroom. Serious head injury resulted. Mom panicked and set up the kidnapping/ransom scenario.
I’m typing this from memory, so some of the details might be slightly different, but the “mom did it and here’s how/ why” part is right.