The test involves measuring the amount of amino acids found in the fingerprint. Levels of amino acids are twice as high in sweat of women compared to men.
In 2013, defendant James L. Mayfield was convicted of the murder of Jenny Read in a 1976 cold case in San Francisco. Read’s body was found with multiple stab wounds and her pants partially removed. There was the presence of sperm on her body. In 2009, some of the evidence in this case was re-tested… Read More Cold Case murder conviction did not violate the Confrontation Clause by admitting an autopsy report without testimony from the pathologist
Donovan Allen was arrested and charged with murdering his mother Sharon Cox in 2000. After 14 hours of interrogation by the police, he confessed to the crime and later recanted. He was convicted of first degree murder and given a life without parole sentence. Recent DNA testing that was requested by the Innocence Project Northwest… Read More Washington man could be exonerated murder conviction due to DNA testing
The DC court currently operates under a Frye standard for expert testimony, which requires that a methodology or theory has “general acceptance” in the particular field. The DC Court of Appeals is considering a new standard, possibly the Daubert standard, which is used in a majority of states as well as federal court. The Daubert standard… Read More DC considers changing the standard for screening out unreliable science
“Touch DNA” can often show if a person handled a particular item at a scene of crime. Touch DNA occurs when a person deposits particles of DNA from their skin onto an object that they have touched. However, there can also be traces of DNA when a person never touched an object. This occurs when… Read More “Transfer DNA” can cause a person’s DNA to show up at a crime scene where they were never present.
In 2009, Pedro Trejo was convicted of sexually assaulting his niece who was 12 years old at the time of the crime. He was accused after his niece got pregnant and subsequently suffered a miscarriage. The tissue form the miscarriage was submitted to DNA testing prior to his trial and showed there was more than… Read More Appellant denied post-conviction DNA testing due to a lack of factual assertions in his petition
William Ray Jacobs was convicted by jury trial of aggravated sexual assault in 1997. He was sentenced to life imprisonment. Jacobs failed to get relief from his conviction through appellate and habeas proceedings, and in these proceedings, the state contended that the remaining physical and forensic evidence was untestable. Jacobs filed a 1983 suit claiming… Read More Man convicted of rape uses 1983 suit to try to get DNA testing in his case