Once upon a time, there was a group of detectives who worked in the field of forensic science. They were experts in using science to solve crimes and catch the bad guys. One day, they were called to the scene of a robbery at a car dealership. The thief had stolen a brand new car and driven away, but the detectives were determined to catch him.
The first thing they did was to gather as much evidence as they could find. They looked for fingerprints and other trace evidence, such as hair or skin cells, that the thief might have left behind. They also took the Vehicle Identification Number (VIN) of the stolen car so that they could track it down.
Next, they used the Exchange Principle to their advantage. This is the idea that when you touch something, you leave behind a piece of yourself and take a piece of the thing you touched. So, the detectives collected a sample of DNA from the trace evidence they found, such as a hair or a skin cell.
Using this DNA sample, the detectives created a DNA profile of the thief. They compared it to the DNA of everyone in their database of known criminals and finally, they found a match! The thief was a man named Max who had stolen many cars before.
With this information, the detectives were able to deduce that Max was likely the one who stole the car from the dealership. They arrested him and found the stolen car hidden away in his garage. The detectives solved the case and the car was returned to its rightful owner.
From that day on, Max learned that he shouldn't steal and that science can help catch even the sneakiest of criminals. And the detectives were happy knowing that they used their knowledge of DNA and forensic science to bring a criminal to justice.
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