... mistaken to be the rapist, identified by an eyewitness. Chapter two speaks of an invention called PCR. It is referred to as the "DNA fingerprint test (pg.36)." This discovery could be used in criminal investigations to prove the guilty criminal. It explains how before PCR, the most sophisticated way ... to identify a suspect was by blood typing. Unfortunately this technique did not work for Marion Coakley due to the fact that bacteria had eaten away at the DNA, which is a much ... it calls "junk science." Using hair as evidence is an example of what they mean by "junk." The US Judge Fra...

• Word Count: 1796
• Approx Pages: 7
• Grade Level: High School