The results of these tests, which measure the level of alcohol or other drugs in your urine or blood, or the amount of alcohol on your breath, indicate whether you were intoxicated at the time of your arrest. They prove particularly important for prosecutors trying DUI cases. Scientists call deoxyribonucleic acid the blueprint of individuality. Everyone has a unique version of this genetic code. Matching DNA structure is believed to appear in no more than one in 130 million persons, excluding identical twins.
Scientists can find it in semen, blood, hair and other body samples.
If your DNA matches DNA found at the crime scene, prosecutors can build a strong case. Like DNA, each person has his or her own individual fingerprints. If police found yours at the crime scene, expect the prosecution to present this information in court. If you confessed to the crime with which you are accused, prosecutors can generally present this information at trial. Technicians laboring in crime labs can ascertain whether bullets found at the crime scene match the type of bullets fired by a gun you are known to own, and, in some cases, whether they match your specific firearm.