It was a partial match to a couple of different sex offenders in CODIS. Let me say something about what that means. YOU could be a partial match as well. CODIS has only felons in it - but had they sent the same sample to, say, Othram, there could have been 1000 or 10000 partial matches.
Humans are 99.999% identical. So, each DNA study system uses specific regions of our DNA to compare. They found some of the same genes in the glove compartment (IIRC, it was on an owner's manual - so had been touched by car detailers, the dealer, the factory where it was made) as they found in some sex offenders. However, it was NOT a match.
And again - YOU could be the next match, if this technique was used in general. If we were all in a DNA database (I'm in two of them), we'd find ourselves matching all kinds of miscreants and others - as we are all related.
We all have very similar DNA. Since the glove compartment is not part of the crime scene AND because of the kind of misrepresentation by the defense (although it's understandable), here we are, 3.5 years later and this red herring is still swimming (and I get that).
I could go on (I'm related to a whole bunch of interesting people - pretty closely, too - not unlike this "partial match" from the glove compartment). "Partial match" could and is used to describe degrees of relationship that are like fourth cousin 2X removed. Direct lineage is a bit stronger (a parent/grandparent/great grandparent). Trust me - if you were to follow your own genealogy back to around 1800, you'd find some miscreants in there somewhere. Just statistically, we're all related. And if we go back far enough, we are ALL related to a sex offender of one kind or another. I am including cultural practices in which consent was not required or expected. Such as those of England or Germany in the 10th-16th centuries.
IOW, it's unlikely that the person who touched the owner's manual WAS the actual sex offender - but perhaps a cousin or something. They may get dragged into this, though.
As far as we know, this is not a stranger sex assault case. No sexual assault has been alleged. All the facts point directly to intimate partner violence.
I hope everyone here starts thinking about what kind of DNA might be in THEIR car (that would be exploited by the defense if you were harmed). Because the DNA from the manufacturers is there. It's possible to parse the DNA well enough to give hints (sometimes facts) about where the DNA came from (in the JonBenet case, the stranger DNA on the underwear was from a specific region in China - where the newly purchased underwear was manufactured). I do not think that some hapless Chinese worker got a visa and flew to Boulder to kill JonBenet.
As someone new to the case, your question was a good one - but I'm curious. Why was that your first question? Do you know the other facts of the case? Sorry if that sounds rude in text - I don't mean it that way. I'm truly curious
IMO.