Sumter Jacques Doe
Sumter Jock Doe 1976 - DNA Doe Project Cases
Sumter Jane Doe
Sumter Jane Doe 1976 - DNA Doe Project Cases
I'm curious to see if one of these people can be identified how easy or difficult will it be to identify the other.
Sumter Jacques Doe
Sumter Jock Doe 1976 - DNA Doe Project Cases
Sumter Jane Doe
Sumter Jane Doe 1976 - DNA Doe Project Cases
Hopefully their DNA samples quality is still good enough to be used
Haven't their profiles been run through Namus for awhile now and maybe some other systems such as CODIS?
I'm not understanding about the original samples still having to be good. Why can't they just use the information they already have?
CODIS samples 13 sites, familial DNA samples millions. CODIS also only compares to a small and very limited database, but GEDmatch has millions of people in it. It’s a new Ferrari vs. a 76 Yugo.I know there are different types of DNA that can be tested.
CODIS samples 13 sites, familial DNA samples millions. CODIS also only compares to a small and very limited database, but GEDmatch has millions of people in it. It’s a new Ferrari vs. a 76 Yugo.
CODIS samples 13 sites, familial DNA samples millions. CODIS also only compares to a small and very limited database, but GEDmatch has millions of people in it. It’s a new Ferrari vs. a 76 Yugo.
After rereading your post I think you were probably comparing CODIS and GEDmatch to a Ferrari and Yugo. If so, sorry I misunderstood but wouldn't the profiles still be fairly up to date?
After rereading your post I think you were probably comparing CODIS and GEDmatch to a Ferrari and Yugo. If so, sorry I misunderstood but wouldn't the profiles still be fairly up to date?
The question is having a tissue sample in adequate condition to produce the larger sample needed for the family-type match. The LE samples all use (AFAIK) the same 13 points, so LE result can be successfully compared to LE sample.
A different sort of profile is needed to compare to Ancestry/ 23&Me style results.
I don't have a car suggestion, sorry!
YMMV
They are doing things now that were impossible even three years ago. Many old cases will be solved in the near future. The main problems are bureaucratic and financial! In the Tamam Shud case (aka Somerton Man) an exhumation will be required, which is legally difficult to do. In other cases, LE is reluctant to use new methods due to bureaucratic inertia. But as cases are solved and newer people are in charge, it will happen.Not only have they made great advances in DNA profiling itself I think they have gotten much better at storing the samples for future use. These samples were only taken 12 years ago so hopefully everything is on the up and up. I have confidence it is and this could lead to atleast one of these victims being identified if not both.
Thanks for the info, I didn't know anything about the family type matching.
Haven't their profiles been run through Namus for awhile now and maybe some other systems such as CODIS?
I'm not understanding about the original samples still having to be good. Why can't they just use the information they already have?
the CODIS database uses STRs ("short tandem repeats") at 13 (pre-2017) or 20 (post-2017) sites in the genome. the GEDmatch database uses an autosomal profile that consists of anything up to a million SNPs (single nucleotide polymorphisms). A GEDmatch autosomal profile will return matches by degree of relatedness expressed in centimorgans (centimorgans are a unit of genetic distance); there are typical ranges of shared centimorgans for genealogical relationships (parent/child share around 3400cM; first cousins share around 700-1200cM; third cousins on average share 53cM). By comparing an autosomal profile on GEDmatch (or a similar service like FTDNA which also allows autosomal uploads and use by law enforcement) you'll get a list of people who share DNA with that profile ordered by relatedness. The GEDmatch system has enough uploaded DNA profiles, at present, that it's estimated that a majority of Americans of European descent likely can be identified through the shared genetic material of relatives as distant as fifth cousins; the method involved requires finding a family tree for, ideally, multiple matching profiles and looking for common ancestry and tracing forward in time from those common ancestors to descendants who may be a potential UID or suspect (this was the method used to identify the Golden State Killer).
I always thought the out of state matchbook in his pocket possibly showed they were traveling...in that case, if they were staying at a motel and never returned, I would think the police would have been called with unclaimed luggage left in the room....or even at the supposed campground. They were neat and clean so obviously bathing and changing clothes. If they had their stuff in a car, what happened to that? Two killers I think. One drove them to the killing site while the other watched them . Doesn't sound random...
I always thought the out of state matchbook in his pocket possibly showed they were traveling...in that case, if they were staying at a motel and never returned, I would think the police would have been called with unclaimed luggage left in the room....or even at the supposed campground. They were neat and clean so obviously bathing and changing clothes. If they had their stuff in a car, what happened to that? Two killers I think. One drove them to the killing site while the other watched them . Doesn't sound random...