Even the slightest nuance can have a profound impact when the consequences are severe and your liberty is at risk. DNA evidence has become an essential tool in criminal investigations, helping to exonerate the innocent and convict the guilty. What types of DNA evidence are used, and how do they impact the outcome of a case?
DNA evidence can make or break criminal cases
DNA, or deoxyribonucleic acid, is unique to each person (except identical twins). Law enforcement uses various types of DNA evidence to link suspects to crimes or exonerate the innocent, such as:
- Blood
- Saliva
- Hair (with root attached)
- Skin cells
- Semen
- Urine
- Fingernail scrapings
In Maryland, as in many states, the collection and use of DNA evidence must follow strict legal guidelines. The Maryland DNA Collection Act allows law enforcement to collect DNA samples during arrests for certain crimes. This law aims to solve cold cases and prevent future crimes.
DNA evidence analysis involves comparing samples from crime scenes to those of suspects or victims to determine a match. Prosecutors often use this evidence to build their cases, while defense attorneys may challenge its validity or collection methods.
It is important to note that DNA evidence is not infallible. Issues like contamination, mishandling or misinterpretation can affect its reliability. In some cases, the presence of DNA at a crime scene does not necessarily prove guilt.
Why you need an attorney
DNA evidence can determine the outcome of a criminal case. Your future may depend on how well you understand and respond to the evidence against you. If you are contending with criminal charges, having a skilled defense attorney in your corner is crucial.