Friday, October 12, 2018

DNA Forensics

Ok, I have gone over this before, but as I get asked about it a lot and I realized I can't always just answer those questions off the top of my head. That tells me it won't hurt to go over it all again.
So, that is what we are going to do.
Disclaimer: I am not a genius. I don't even play one on T.V. 
I do not think I know everything and if I post something that you disagree with because you do have expertise in DNA testing results please reach out to me. I am always looking to learn more.
Alright, now that we have covered that...
Let's go over the Offical Forensic Biology Report
The first one was issued 11/1/16, there are more and I will include those results and state what date they were issued. 
Here are the results listed:

Swabs from steering wheel cover, emergency brake, and gear shift from Vonda's car:
The DNA profile obtained was consistent with a mixture of at least 3 individuals, including at least one male. Due to the complexity of the mixture, further interpretation of this DNA profile is deemed inconclusive.
Further testing on this, issued 2/3/17, states that the DNA profile from the unknown female individual (unknown female #2) did not match Vonda Smith.

Cutting from the front passenger seat of Vonda's car:
presumptive tests indicated the presence of blood. Further testing indicated human blood, the DNA obtained matches, Jessie Morrison.

Coke bottle from the floorboard:
DNA profile obtained is consistent with a mixture of at least 2 individuals, including at least one male. The major contributor is that of an unknown female individual (Unknown Female #1) Interpretation of the minor contributor profile is deemed to be inconclusive. The exhibit was forwarded to the Latent Print Unit in Nashville for additional testing. According to the DNA report from 2/3/17, the Unknown Female #1 turned out to match Vonda Smith. 

Mountain Dew bottle from floorboard:
Lip of the bottle: DNA profile obtained is consistent with a mixture of at least two individuals, including at least one male. the major contributor is Jessie Morrison. The minor contributor profile is deemed inconclusive.
Stained Area: Presumptive tests indicated the presence of blood. Further testing indicated the presence of human blood. The DNA profile obtained was Jessie Morrison. This exhibit was forwarded to the Latent Print Unit in Nashville for additional testing.

Paper towel from Jud Neal Loop Rd:
Testing indicated the presence of human blood. The DNA profile obtained is that of a female individual (Unknown female #2)

Vaginal swabs from Jessie Morrison: 11/1/16
The examination did not indicate the presence of semen. On 6/23/17 report it states the Y-STR profile obtained is consistent with a mixture of at least two males. The major contributor matches Gary Ealey and JD Ealey. Therefore, they cannot be excluded as the source of this male DNA profile and, barring a mutation, neither can any of their paternal male relatives. Due to the limited minor contributor profile obtained, interpretation of the minor profile is deemed to be inconclusive. 
I am no Scientist, but I have read about Y-STR DNA testing and as far as I can understand, all paternally linked males have the same Y-STR profile. Which is why it is in the report that it could be Gary and JD as the major contributors. It doesn't mean she had sex with J.D. Ealey. If anyone knows any different feel free to correct me but I am almost certain that I am understanding this correctly. That is also why it states it couldn't rule out any other of Gary's paternal relatives. So let us all take a moment to realize that THIS RESULT DOES NOT INDICATE SHE HAD SEX WITH JD OR ANY OTHER OF GARY'S RELATIVES. IT ONLY SHOWS SHE HAD SEX WITH A MALE FROM THAT FAMILY, WHICH WAS, OF COURSE, GARY, HER FIANCE. 
This result has been used to weave many a conspiracy theories trying to implicate Gary in a "crime of passion" after he found out Jessie had been sleeping with his father. This is not only nonsense it is defamation of Jessie's character. Let's not do that. 
Also, that is only the case with males, hence the Y, as in Y- chromosome.  So the idea that the blood in the car was Channings due to him having had oral surgery that morning is ignorant. It wasn't. It was tested. It was Jessie's. 

Underwear from Jessie Morrison:
Examination confirmed the presence of spermatozoa. 
Nonsperm: The DNA profile is consistent with Jessie Morrison. An additional allele was obtained at locus D5S818. Due to this limited information, interpretation of this additional allele is deemed to be inconclusive. 

Sperm: The DNA profile obtained is consistent with a mixture of at least two individuals, where the major contributor profile matches Gary Ealey. Due to the limited minor contributor profile obtained, interpretation of the minor contributor profile is deemed to be inconclusive. 

A swab of the fingerprint from Jessie Morrison's abdomen:
No DNA profile other than the ASSUMED contributor Jessie Morrison was obtained.

Jessie Morrison's driver's license from the scene:
Per the report issued 2/3/17 The limited partial DNA profile obtained is consistent with a mixture of at least two individuals, including at least one male. Due to the limited profile obtained, further interpretation of this profile is deemed to be inconclusive.
Per the report issued on 6/23/17 There was a DNA profile found of an unknown male, Gary Ealey, William Smith, Roger Smith, and JD Ealey is excluded as the source of this male DNA profile.

Right-hand nail clippings from Jessie Morrison:
Per the report, 6/23/17 Presumptive tests indicated the presence of blood. Testing for human blood was not performed due to a limited sample. The Y-STR profile obtained is consistent with a mixture of at least 3 males. Due to the limited profile obtained and the unknown number of potential contributors, this profile is deemed to be inconclusive. 

Left-hand nail clippings from Jessie Morrison:
Y-STR profile obtained is consistent with a mixture of at least 3 males. The major contributor is from an unknown male (unknown male #2), therefore, Gary Ealey, William Smith, Roger Smith, and JD Ealey are excluded as the source. 

These results leave a lot unanswered. DNA is very complex. What does this tell us though? 

Let me know what you guys think.
I found lots of sites that were full of information about DNA, I wanted to share a couple of them here in case you were interested in being able to understand DNA testing and results, don't rely on this only but it is a good starting point:



Until next time...



1 comment:

  1. Just shows Willie's brother needs to be tested!! No proof of him being on vacation so they need to test him.

    ReplyDelete