Guide to DNA Extraction and Profiling



In a courtroom, every attorney wants to have stronger evidence to either defend their client or prove the other party guilty of a crime. Today, the strongest evidence that one can use when either defending or prosecuting anyone is through DNA profiling.

Every person has a unique set of fingerprints, and in addition to that, every person also has a unique identifier built without our bodies, our DNA. DNA is the genetic blueprint that determines our biological characteristics. To learn more about  DNA Testing, visit  ChIP validation.  It is a long molecule located in every cell of our body. Half of our DNA is inherited from our mother and half from our father. Every human DNA is identical for the most part of it but there is a very small DNA sequence that is unique to every individual. This DNA sequence that makes us unique is what is known as our DNA fingerprint.

DNA profiling is very accurate and so courts have been able to rely upon this DUNA fingerprinting to solve crimes. Even crimes that are more than 30 years old can be solved using DNA profiling.

How is DNA profiling done? The first thing the crime investigators do is to collect specimens from the crime scene. You can actually extract DNA from anything belonging to an individual. To learn more about  DNA Testing, click ChIP validation.  DNA can be extracted from hair, blood, body fluids, and others. Sometimes if a victim has scratched their attacker, the skin cells can be extracted underneath the victim's fingernails in order to identify the criminal through the DNA extracted from the skin cells of the attacker.

In order to match against other samples, DNA has to be isolated. The process of isolating DNA is called electrophoresis. In this process special enzymes recognize patterns in the DNA and cut the strand. These strands are then placed on a gel where they are separated by passing electric current through it. The fragments are then compared with DNA from suspects and a match is determined.

Sexual offenses, homicide, assaults, robbery, criminal damage, and other cases, are cases where DNA profiling is very useful.
With DNA profiling, the list of suspects is narrowed down. DNA profiling has led authorities to release many rape suspects because the DNA sample does not match. But specimens can be planted in crime scene so authorities need to continue investigating crime based on motive, testimony, weapon, and other clues so that the case can be solved more accurately. Learn more from   https://en.wikipedia.org/wiki/DNA_profiling.