DNA Evidence

DNA evidence is used to solve crimes. Scientist first have to extract DNA from an item. They must extract a plentiful amount to actually test it. Testing DNA could be used for finding a connection from the item it was obtained from, to a person's DNA. The light source, the acid test and the chemical test are all ways to test DNA. Objects such as burnt wisdom teeth can be used as DNA evidence. As long as you have enough the test will go through. But, if there is not enough DNA, you can extract DNA from related people to build, in a backwards way, a DNA profile. That's a taste of DNA evidence for you!