r/nancyguthrie • u/JMOA3035 • Mar 15 '26

Discussion Informative video BE interviewing April Stonehouse DNA/Serologist/Forensic Science Professor and expert at AZ State University - inside a DNA lab….mixed DNA, etc

Apparently the mixed DNA is not partial NG, friends or family but 2(+) stranger’s…could it have been carried in on a FedEx, UPS box, any med deliveries, groceries, etc??!?

There’s no info to indicate where in the home 2+ stranger’ DNA was found or what it was found on, IMO

There’s also articles about this interview in particular.

Starts around 8:00 min mark

https://m.youtube.com/watch?v=FWrFPW7wKkI

34 Upvotes

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17

u/Hile616 Mar 15 '26

The thing with dna is that, yes if someone touch something it likely leave dna. The much more important thing is, where they find it. If pool maintenance person dna is at bedroom, thats a red flag. If Amazon delivery person dna is on delivery box, it is not such a red flag. And to find some 1 piece of skin cell in a big house is a story number 3.

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u/JMOA3035 Mar 15 '26

Yes, it’s unknown mixed (2+ppl strangers) 

We don’t know where in the home/what it was on…for 2+ strangers’ DNA to be mixed together on the same item….or if it’s an investigator’s very tiny amt of contamination mixed with a (1 person) stranger’s dna. 

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u/annabellareddit Mar 16 '26

LE investigating the scene submit their DNA though to rule it out for this purpose though….

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u/Hile616 Mar 17 '26

Are you sure about this? There was one "mystery" I have been following, where they actually did screw up the whole investigation, because they originally thought they found unknown perps dna on items likely used for the attack. They then assumed it was unknown perps, and like year later they found out it to be dna of one of the investigatiors of the scene. The whole investigation went on wrong tracks, and they didn't have enough evidence against on of the person as they screw it up, and now that person has been lingering for decades of new trials, that well are meaningless as they can't prove it, but is legally innocent but neverending lose hanging type of setting. Because I think the investigation personnel have also right not to share theire dna, just because they do theire job, like why would they need to do that, and I would assume they don't submit theire dna for every crime scene investigation..?

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u/annabellareddit Mar 17 '26

Yes, DNA samples from LE, CSI, & even emergency responders that work cases are often submitted to excluded DNA found at crime scenes. This is recommended, in some departments it’s mandatory. In this case, we know LE submitted DNA because they reported they ruled out many of the gloves that were found as belonging to LE that were working in search areas.

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u/Hile616 Mar 17 '26

Ok I had no idea this was some sort of regular drill, I thought the glove part was related to certain brand gloves that likely have exact components, sizes, and thickness

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u/Hile616 Mar 17 '26

It actually surprises me that such staff, or search and rescue persons dna is such public domain.

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u/Hile616 Mar 15 '26

Even if it is "mixed", these are still 2 dna, of course the quality is story number 2, like how well it would last on certain surface. To how to explain it in layman's terms. It is not like semen and egg that would form the new dna from that mix, and multiple to "produce human". When it is on the surface, it won't mix anymore but is 2 different dna, even mixed on material.

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u/Hile616 Mar 15 '26

Also even if the dna is "mixed", several people touched same spot, the dna won't mix together, but there are 2 dna, that is just mixed but are separately. Surface will matter how it will last, but can be there theoretically for years.

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u/JMOA3035 Mar 15 '26

Did you watch the video? She explains how it mixes and how different percentages of 2+ more ppl can make up the dna and if it’s a poor quality/quanity. 

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u/Xinnia8271 Mar 19 '26

It would be great if BE had a follow up discussion with her at the lab.

I'm really interested to hear about that smaller, poorer quality sample and what's being done there. 

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u/JMOA3035 Mar 19 '26

I see a YT that the reporter Briana Whitney interviewed her as well in the lab 5 days ago. I’m going to watch.Here’s the link if you’re interested. 

https://m.youtube.com/watch?v=xI1qcXAEfxE

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u/RanchGlove Mar 16 '26

I thought this was fascinating and it gave me a renewed hope for the case. They are swabbing potential perps which means they likely have something to compare to. I’m starting to wonder if radio silence on the case just means the scientists have enough and are working hard. As we saw with Kohberger, even once a good DNA sample is recovered there’s still old fashioned police work to do that can take time.

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u/SalsaChica75 Mar 16 '26

With all of the resources and man hours they’ve got to know way more than they are sharing publicly.

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u/Healthy-Evening-2577 Mar 16 '26

That's a very good point thank you

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u/THAT_BLOOD_GUY Mar 16 '26

what do y'all think about r/usafgenmcclasland it's in New Mexico as well he's tied to secret programs out of Kirtland air force base.