DNA
The DNA Evidence
A list of the 45 bloodstains introduced at trial, with their DNA evidence.
(Two types of DNA tests were used, RFLP and PCR. RFLP tests are more precise, but require much more DNA. PCR tests were used when only small amounts of DNA are present.)
Identification Key: S = Suspect, W = Woman Victim, M = Man Victim
LOCATION OF STAIN NO. OF TESTED LOCI
RFLP NO. OF TESTED LOCI
PCR NOT EXCLUDED***
SUSPECT’S PROPERTY
trail (item 6) 0 2 S
trail (item 7) 0 5 S
foyer 5 6 S
master bathroom floor 0 1 S
CRIME SCENE
Blood pool by Woman 0 1 W
Blood drop by Woman 0 7 S
walk blood drop (item 48) 0 7 S
walk blood drop (item 49) 0 6 S
walk blood drop (item 50) 0 7 S
walk blood drop (item 52) 5 7 S
Shoe impression 0 5 W
Blood drop on Man’s boot 5 6 W & M
Woman’s fingernails 0 7 W
Back gate (item 115) 0 2 S
Back gate (item 116) 0 2 S
Back gate (item 117) 0 2 S
Glove From Scene
Inside/ back of wrist 0 1 W & M
Inside/ back of index finger 5 2 W & M
Inside/ side of middle finger 5 2 W & M
Inside/ back of ring finger 8 2 M
Inside/ back of hand 5 2 W & M
Inside/ by wrist notch 0 2 S & M
Outside/ near wrist notch (item G-11) 0 1 S, W & M
Outside/ near wrist notch (item G-12) 0 1 S & M
Stitching/ wrist notch 0 1 S, W & M
Inside/ back of cuff 0 1 S,W & M
Socks from Suspects house
Ankle 14 7 W
Near ankle (item 42-B1) 0 2 W
Near ankle (item 42-B2) 0 2 W
Upper sock/ opposite side 0 2 S
Upper sock/ same side 9 2 S
Upper toe 0 2 S
Suspect’s Car
Driver door interior 0 1 S
Instrument panel 0 1 S
Driver side carpet 0 1 S
Steering wheel 0 6 S & W
Center console (item 30) 0 2 S
Center console (item 31) 0 2 S
Driver side wall 0 1 S
Driver side carpet 0 1 W
Center console (combination of 3 below) 4 * S
Center console (item 303) * 2 S
Center console (item 304) * 2 S
Center console (item 305) * 2 S
From the evidence presented above what is the relative likelihood that the suspect was the perpetrator? Explain using specific parts of the evidence presented to support your claim. Assume the data reported from the lab is accurate and of good quality.
