On Thursday testimony in the Mark Norwood trial focused on the DNA testing that lead to his arrest in 2011.
The DNA was found on the blood stained bandana that linked Norwood to the murder of Christine Morton. Several DNA lab analysts who tested the bandana found not far from the Morton home took the stand. They explained to jurors how the bandana tested positive for Christine Morton's blood and how it was determined the other DNA found on the bandana belonged to Mark Norwood and no one else.
Norwood's attorneys tried to convince jurors that bandana may have been contaminated at some point over the years. They also pointed out that it is impossible to know exactly when the blood got onto the bandana, saying it could have been before or after Norwood came in contact with it.
It is that bandana that changed the course of the case. DNA testing set Christine's husband Michael Morton free after nearly 25 years behind bars and lead investigators to Norwood.
Jurors also heard from the medical examiner who performed the autopsy on Christine Morton in 1986. Former Travis County Medical Examiner Dr. Roberto Bayardo told jurors Christine died from massive crushing injuries to her head. He stated that she was hit by a blunt object a minimum of eight times.
Graphic autopsy photos were shown during that testimony. Christine's son Eric, who was three-years-old when his mom was killed, left the courtroom along with several other family members.
"No one wants loved ones to experience pain or discomfort, but because of our unique situation, I know that he has to do this," Michael Morton said of his son Eric. "He has to go through this rough time and I'm confident that he will come out the other side a better man."
Dr. Bayardo admitted in his testimony that he could not determine a time of death from Christine Morton's autopsy. He had previously used stomach contents to estimate her time of death, but said it was not exact science.