Bosma Murder Trial 02.29.16 - Day 16

[Velma]

Court now seeing a powerpoint presentation Sloots prepared.
by Adam Carter 12:31 PM

Starting with "what is DNA?" It's a "complex molecule," the report says. DNA directs body structure and function, and it's found in the nucleus of every cell except red blood cells.
by Adam Carter 12:32 PM

"it basically defines us as individuals," Sloots says.
by Adam Carter 12:34 PM

 

[SnooperDuper]

molly hayes ‏@mollyhayes 39s40 seconds ago
CFS also has chemistry, toxicology, firearms sections, he says.

molly hayes ‏@mollyhayes 35s36 seconds ago
Sloots was first involved in #Bosma case back in May 2013.

Susan Clairmont ‏@susanclairmont 30s31 seconds ago
May 14, 2013 to Sept. 11, 2015, he wrote 12 reports for the #Bosma case...Now presentation that is an intro to DNA.

Colin Butler ‏@ColinButlerCBC 44s45 seconds ago
Jury now getting a DNA primer in the #TimBosma case

molly hayes ‏@mollyhayes 10s11 seconds ago
Jury seeing a PowerPoint presentation about forensic biology. What is DNA? #Bosma

 

[SnooperDuper]

Susan Clairmont ‏@susanclairmont 24s24 seconds ago
DNA is "the blueprint of life." Found DNA needs to be compared to known samples.

Susan Clairmont ‏@susanclairmont 47s48 seconds ago
A person can be excluded from matching a DNA profile or cannot be excluded. #Bosma

Susan Clairmont ‏@susanclairmont 57s57 seconds ago
DNA: "It basically defines us as an individual," says Sloots.

 

[Velma]

DNA is inherited from your parents, the report says. Half comes from your mother, and half your father. DNA is the same from cell type to cell type in a body -- skin and blood from a person will have the same DNA. But no two people, with the exceptions of identical twins, have the same DNA.
by Adam Carter 12:36 PM

Scientists at the CFS use DNA to "determine the source of biological material."
by Adam Carter 12:36 PM

More than 99% of our DNA, Sloots says, is the same -- but one per cent is different. Sources of DNA can be blood, semen, saliva, skin, hair follicles, etc.
by Adam Carter 12:37 PM

 

[SnooperDuper]

molly hayes ‏@mollyhayes 49s49 seconds ago
DNA defines us as individuals. Called "the blueprint of life". #Bosma

Susan Clairmont ‏@susanclairmont 25s26 seconds ago
You DNA is inherited from your parents: half from mother, half from father. DNA is same for identical twins. #Bosma

Lisa Hepfner ‏@HefCHCHNews 22s23 seconds ago
#Bosma jury is learning about DNA

Colin Butler ‏@ColinButlerCBC 16s17 seconds ago
Sloots says no two individuals have the same DNA, with the exception of identical twins

 

[SnooperDuper]

molly hayes ‏@mollyhayes 22s23 seconds ago
DNA is in every cell which means you don't need blood to test for a comparison of blood sample, he says. For ex can use a mouth swab #Bosma

Susan Clairmont ‏@susanclairmont 2m2 minutes ago
More than 99% of DNA shared by all people. 1 % is unique. Found in blood,semen, saliva, mucous, muscle, bone,teeth, skin, hair follicle.

molly hayes ‏@mollyhayes 1m1 minute ago
Sources of DNA include blood, saliva, semen, mucous, muscle, bone/teeth, skin, hair follicles. #Bosma

Susan Clairmont ‏@susanclairmont 41s42 seconds ago
Sloots explaining chemicals used to strip away everything in a cell except DNA.

Susan Clairmont ‏@susanclairmont 23s24 seconds ago
Six feet of DNA in each cell. #Bosma

 

[Velma]

To get a DNA profile, scientists have to purify the sample to remove everything but the DNA itself.
by Adam Carter 12:41 PM

If there's sufficient DNA, scientists copy it, amplify and separate the DNA, and then compare it with a DNA profile.
by Adam Carter 12:43 PM

 

[SnooperDuper]

Colin Butler ‏@ColinButlerCBC 38s38 seconds ago
Sloots says there is about six feet of DNA found in every cell, if you were to put it end to end

Susan Clairmont ‏@susanclairmont 2m2 minutes ago
Need a minimum amount of DNA to get reliable result. Look at 15 areas of DNA. #Bosma

Susan Clairmont ‏@susanclairmont 40s41 seconds ago
Do 15 tests for a DNA profile. If results are not available for all, can result in a partial profile.

 

[Velma]

A DNA profile is a set of up to 15 pairs of numbers that describe the DNA at 15 different locations of a persons' entire DNA. A partial profile (less than 15 locations) can still be useful, but is less precise.
by Adam Carter 12:44 PM

Sloots likens it to someone seeing a hit and run, but only seeing the first three digits of a license plate.
by Adam Carter 12:45 PM

Amelogenin is a test scientists use to determine the sex of the individual, Sloots says.
by Adam Carter 12:46 PM

Court now seeing an example of a single source DNA profile diagram.
by Adam Carter 12:47 PM

Sometimes, Sloots says, DNA can be degraded, and that makes identification more difficult.
by Adam Carter 12:48 PM

 

[Velma]

A DNA profile doesn't describe a persons' entire DNA, the report says. So it's possible -- though "highly unlikely," that two unrelated people would share the same complete DNA profile.
by Adam Carter 12:51 PM

The chance of two unrelated people sharing the same DNA profile (the random match probability) is addressed with a probability statement. An example would be a 1 in a million chance.
by Adam Carter 12:52 PM

Forensic DNA testing can tell you the sex of an individual, if a source came from one person or multiple person, paternity/maternity, etc.
by Adam Carter 12:52 PM

 

[SnooperDuper]

Susan Clairmont ‏@susanclairmont 38s38 seconds ago
DNA can be "degraded." So may not be intact for testing. An amelogenin test determines sex.

molly hayes ‏@mollyhayes 31s31 seconds ago
Jury now learning about DNA profiles (a set of up to 15 pairs of numbers that describes DNA at 25 diff locations of a person's entire DNA).

Susan Clairmont ‏@susanclairmont 4m4 minutes ago
Sloots showing us sample test results. #Bosma

 

[SnooperDuper]

Colin Butler ‏@ColinButlerCBC 2m2 minutes ago
Sloots says that two unrelated people are highly unlikely to share the same DNA profile based on a 15 point test

molly hayes ‏@mollyhayes 2m2 minutes ago
A DNA profile doesn't describe a persons entire DNA. Therefore possible (but highly unlikely) that two unrelated people... (1/2) #Bosma

molly hayes ‏@mollyhayes 2m2 minutes ago
...would share the same complete DNA profile. (2/2) #Bosma

Susan Clairmont ‏@susanclairmont 2m2 minutes ago
Chance of 2 unrelated people sharing same DNA profile is addressed with a probability statement. (1 in X) Random match probability. #Bosma

Susan Clairmont ‏@susanclairmont 42s43 seconds ago
Forensic DNA testing can tell you: sex; single source vs mixture; whether individual can or cannot be excluded; paternity/maternity, RMP.

molly hayes ‏@mollyhayes 26s27 seconds ago
Forensic DNA testing can tell you: sex, single source vs mixture, whether an individual can/cannot be excluded as source of a sample. #Bosma

 

[brightii]

I understand that the trial is projected to the 4 months.
Is there any sense of how much of that time would be taken up with the Crown's presentation and then the other phases of the trial?

Abitcountry: I'm just catching up here while on a lunch break so I don't know if you got an answer already, but Kamille helped me out with a great explanation about the trial process on the weekend #4 discussion thread. See her post #182 and I hope it helps you as it did me.

http://www.websleuths.com/forums/sh...osma-Murder-Trial-Weekend-Discussion-4/page13

 

[Velma]

DNA evidence can also show whether a person can or can't be excluded as the source of a sample, Sloots says.
by Adam Carter 12:55 PM

Forensic DNA testing can't tell you the age or race of a source, their physical characteristics other than sex, when a sample was deposited and how a sample was deposited, the report says.
by Adam Carter 12:57 PM

We're now breaking for lunch. Back at 2:15 p.m.
by Adam Carter 12:59 PM

 

[SnooperDuper]

molly hayes ‏@mollyhayes 3m3 minutes ago
Forensic DNA testing can also tell you paternity/maternity, and also random match probability. #Bosma

Susan Clairmont ‏@susanclairmont 2m2 minutes ago
DNA testing cannot tell you: age of source; race; physical characteristics other than sex; when sample was deposited or how.

molly hayes ‏@mollyhayes 2m2 minutes ago
What DNA testing CAN'T tell you: age of source, race of source, physical characteristics besides sex, when/how sample was deposited. #Bosma

Colin Butler ‏@ColinButlerCBC 2m2 minutes ago
Sloots says DNA testing can't tell you the age, race or physical characteristics of a source other than gender

Susan Clairmont ‏@susanclairmont 1m1 minute ago
Jury dismissed for lunch. #Bosma

molly hayes ‏@mollyhayes 33s34 seconds ago
Breaking for lunch. Back at 2:15 pm #Bosma

 

[billandrew]

The coloured posts were an excellent idea. Thank you. It definitely helps navigate through the thread.

 

[Velma]

SnooperDuper, thanks for covering Twitter today and for colour-coding your posts as well.

 

[Abitcountry]

The coloured posts were an excellent idea. Thank you. It definitely helps navigate through the thread.

:rose::rose::rose::rose:Velma....Velma.....Velma.

 

[brightii]

DNA is inherited from your parents, the report says. Half comes from your mother, and half your father. DNA is the same from cell type to cell type in a body -- skin and blood from a person will have the same DNA. But no two people, with the exceptions of identical twins, have the same DNA.
by Adam Carter 12:36 PM

Scientists at the CFS use DNA to "determine the source of biological material."
by Adam Carter 12:36 PM

More than 99% of our DNA, Sloots says, is the same -- but one per cent is different. Sources of DNA can be blood, semen, saliva, skin, hair follicles, etc.
by Adam Carter 12:37 PM

I hope neither DM or MS have a long-lost identical twin! :scared:

 

[redheart]

I guess I'm the only one who hates the coloured posts? :hiding:

Ah well, I usually follow directly on twitter anyway. :thumb: