A Forensic DNA Specialist for the RCMP testified today about evidence discovered in the investigation of 18-year old Baylee Wylie’s murder last December.
Michelle Mascioli presented three reports she wrote about the results of DNA testing of evidence.
Three test results she examined resulted in DNA matches to profiles previously identified in this trial as only Male 1, Male 2 and Female 1.
Mascioli only used initials to match the profiles saying Male 1 was IDed as “TN”, Male 2 was IDed as “DM” and Female 1 was called “MS.”
The DNA for the males came from two different sections of a glove, and the female DNA came from a bloodstain on the rear porch.
Mascioli says when a comparison is made, she calculates probability of a random coincidental match with a Caucasian Canadian #Moncton #NB
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli: DNA from a glove matches Male 1 initials “TN” probability of unrelated random match at 1 in 350 quintillion #Moncton #MonctonNews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli: DNA from a diff area of the glove matches Male 2 initials “DM” probability of unrelated random match 1 in 100 quintillion #NBnews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli: DNA from rear porch at 96 Sumac matches Female 1 initials “MS” probability of unrelated random match 1 in 280 quadrillion #Moncton
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli says those numbers mean practically zero chance of that DNA matching someone else #Moncton #MonctonNews #NB #NBNews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Defence Counsel asks Mascioli if all DNA samples in this trial came from blood. She says for the most part blood was the source #Moncton
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Under cross examination, Mascioli told Defence Counsel Robert Rideout she could not tell when or how the DNA was deposited.
She added DNA can last for a very long time under cold, dry conditions, while humidity and high heat can degrade DNA.
Mascioli says DNA can be preserved in cold dry conditions for a long time (up to centuries) #Moncton #Monctonnews #NB #NBNews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli added DNA can only link individuals, objects and locations.
Rideout asks Mascioli if it’s possible DNA can be transferred between items? She says yes but less is transferred each time #Moncton #NBNews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
Mascioli says for transfer it depends if DNA source is wet or dry and the level of contact #Moncton #MonctonNews #NB #NBNews
— 91.9The Bend News (@919TheBendNews) October 25, 2016
