DNA stands for deoxyribonucleic acid. It is a chemical made up of two long molecules, arranged in a spiral. We refer to this as the double-helix structure.
DNA carries genetic information and is unique. Because it is unique, the ability to examine DNA found at a crime scene is a very useful forensic tool. The common methods used to identify and describe the DNA profile includes – Restriction fragment length polymorphism (RFLP) and Short tandem repeat profiling (STR).

DNA is not just used in the field of Forensics but also in:
Bio-informatics
Pharmacology
Nano-technology
Archaeology
Anthropometry

Read more about DNA on
https://www.news-medical.net/life-sciences/DNA-and-Technology.aspx#:~:text=DNA%20technology%20in%20forensics,tandem%20repeat%20profiling%20(STR).

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