10ofRods
Verified Anthropologist
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I’m very rusty on this case. They don’t know the unknown males identify, and he hasn’t been ruled out? How did his dna get in her vehicle?
I've posted about this several times - including yesterday. So I'll make this brief.
We all have stranger DNA in our cars.
It's a PARTIAL match.
All of us will have a sex offender "partially matching" some of the DNA in our homes and cars, if we cast the net wide enough. A partial match to TWO different felons (both of whom, I believe were incarcerated at the time of the murder) is not a big deal.
"Partial match" is not a scientific term. Humans are 99.999% or more identical to each other. Othram uses 600,000 SNP markers (CODIS uses considerably) to get more specific results. CODIS is only interested in matching crime scene DNA to felons. CODIS cannot unlock magic results - the matches are generally "partial" (unless someone in the database is the actual murderer - which they WERE NOT, because it was only a partial match to the glove box DNA). No felon in CODIS was a direct match for the glove box. And I bet there were OTHER partial matches (from other types of felons...but the Defense wants to play up that sex offender thing).
There are 750,000 sex offender felons in the US database. One of them is a relative of the guy who put the owners' manual in the glove box, most likely (I do recall that there was info about where in the glove box the DNA was found - not that it matters exactly). If it had been the actual sex offender felon, it would not be a partial match (unless, of course, it was only partial DNA in the first place - which is also quite common).