×
gloved hands with DNA and other evidence

How Can DNA Evidence Affect a Criminal Case?

If you are facing criminal charges it is crucial that you understand the role DNA evidence can play in your case. Depending on the details of your circumstances the use of genetic information can help prove your innocence or condemn you in court. Work with a skillful Upper Peninsula criminal defense lawyer for experienced legal advice.

What is DNA Evidence?

DNA evidence is genetic information collected from samples of the human body. Deoxyribonucleic acid is found in nearly all cells and is unique to the individual. Genetic samples of this molecule can be found in a person’s:

  • Blood
  • Skin cells
  • Tissue
  • Saliva
  • Sweat
  • Semen
  • Fingernails
  • Muscle
  • Bone
  • Hair
  • Urine
  • Feces

How Can DNA Evidence Affect a Criminal Case?

DNA evidence can benefit both the prosecution and defense in a case, depending on the circumstances.

Whether DNA is found at the scene of a crime or collected from potential suspects, law enforcement and prosecutors may use DNA evidence in the following ways or more.

  • Identify victims of a crime by testing bone, blood, or other samples
  • Connect multiple crimes to one perpetrator if the same DNA is found at more than one crime scene
  • Eliminate individuals as suspects of a crime if their DNA sample does not match one found at the scene of the crime
  • Link suspects to the crime if their DNA sample matches one found at the scene of the crime
  • Identify the perpetrator by running the DNA sample collected at the crime scene through federal databases to see if it matches genetic information from a previous crime or offender
  • Exonerate falsely convicted individuals if their DNA does not match one found at the scene of the crime

As established above, DNA evidence can help identify, convict, or exonerate individuals. Because no two people have the same genetic information, DNA is often used as compelling evidence to sway a jury or judge.

A judge can even issue a warrant to collect a DNA sample from a suspect. If DNA is found at the scene of the crime and there is probable cause to suggest that it will match a suspect’s genetic information, a judge may issue a warrant requiring the suspect to provide a DNA sample. Some suspects may choose to offer a sample of their own volition, particularly if they are innocent and feel doing so will convince law enforcement that they are not connected to the crime.

Examples of DNA Evidence

DNA evidence is not always available at the scene of the crime, especially if the culprit is experienced and knows how to clean up after themselves. However, genetic information can be found in several ways, some of which include the following.

  • Saliva left on a cup, cigarette, food, straw, envelope, etc.
  • Blood on the floor, walls, etc. if the perpetrator was injured during the crime
  • Skin cells under the nails of a victim if they fought against the perpetrator
  • Semen found after a sexual assault
  • Strands of hair left on the ground, stuck on clothing, etc.

Regardless of how the DNA evidence is obtained, its use can be significant in a criminal case. Work with an experienced defense attorney to learn more about your legal rights and options.

Website Designed & Managed by