Deoxyribo Nucleic acid (DNA) is a nucleic acid that contains the genetic information used in the development and functioning of all living organisms. The main role of DNA molecules is the long term storage of information. It contains the information required to construct other components of cells, such as proteins and RNA molecules. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.
Within cells, DNA is structured into structures called chromosomes. These chromosomes are duplicated before cells divide, in a process called DNA replication. Within the chromosomes, chromatin proteins such as his tones compact and organize DNA, which helps control its interactions with other proteins and thereby control which genes are transcribed.
DNA Testing is one of the most effective means of solving crime scenes. DNA Testing is one of the few branches of science that can not be refuted. No one in the world has your exact DNA. In recent years DNA testing has been used to reopen old cases and free innocent people from jail.
A current discovery in the discipline of DNA testing can open up even more old cases and allow even better accuracy at crime scenes. A computer program has been developed that can separate one persons DNA from an object. In many cases the DNA was too mixed up to tell which person actually committed the crime. This new science makes DNA testing easier.
The science of DNA testing has come a long way since its humble beginnings. In fact with this new advance in DNA testing its results are so accurate they can not be refuted even in a court of law. Popular television shows such as the CSI franchise and Law & Order depict realistic experiences with the science of DNA testing.
DNA testing as a science is about much more than finding out who committed a crime. The science is so accurate they can even tell you where your ancestors lived, and moved and point out specific characteristics.