DNA In Criminal Investigation Essay

DNA derives from nucleic acids. They store genetic information and transfer energy. DNA is found in the nucleus of eukaryotic cells, and they float around in prokaryotic cells. Covalent linkage bond the DNA molecules together between the phosphate and sugar groups to create a polynucleotide. Two of the polynucleotides are twisted to create the shape of a double helix.

It is made up of four nitrogenous bases, which are Adenine, Thymine, Guanine, and Cytosine. Adenine always pairs up with Thymine, and Guanine always pairs up with Cytosine. They also have a phosphate group, and a sugar called deoxyribose. The phosphate group had a phosphate atom and four oxygen atoms. The deoxyribose is a five-carbon sugar. DNA is the blueprint for the growth and development of an organism. DNA builds, manages and reproduces all cells. It can be replicated, by

It codes for the color of my eyes, hair, and many other areas. Almost as though, if I haven’t existed, all you would have to do is read my DNA to figure out how I looked like. DNA comes really in handy during investigation for murder cases. Almost every case has found out the criminal by looking at the blood or hair that has showed up on the victim’s body or at the crime scene, all due to the DNA. What’s really interesting is when a strand of my hair falls down into the toilet bowl. The hair reflects from the light above to leave a shadow. I would think that the shadow would just be in a shape of a line, but it’s actually in the shape of a flat double helix. I think DNA becomes most useful for me as a confirmation. A confirmation as in there is nothing wrong with me because I know that my skin isn’t smooth, and I have spots of dark skin on my legs. But it’s just hereditary from my father. My father even apologized once for letting me get his genes, but I have never felt ashamed. I embrace it because it is a part of who I