DNAstandsfordeoxyribonucleic acid.Itis a moleculethat containsallinformationthat makeup andsustainan organism.DNA is a uniquefeaturein everycreature.Everylivingthinghas DNA in their cells.Itis thefundamentalunitof heredityin allorganisms.Whenever there is an offspringtransmission,portionof DNA passesalong(Endo,Yamamoto, Tatsumi, Emura, Hidaka, &amp Sugiyama, 2013).

Originof DNA

DNAcomesfrom our parents,andwereceiveDNA from bothparents,andtheyalsoreceiveda portionoftheir parent`sDNA.Theamountof DNA reducesover thegenerations. You may not share the same DNA as your ancestors even if they havecontributed to your DNA. It can befoundin one’s saliva,teeth,mucus,hair,semenandblood(Endoet. al, 2013).

Applicationof DNA in crime resolution

DNAhas playeda greatrolein provingan individual`sguiltorinnocencein a courtof law.Innocentpeopleareat timesconvictedwhiletheguiltywalkfree.Nevertheless,through improvementsin scienceandtechnology, criminaltrialshavea greaterdegreeof accuracyandDNA has significantly playeda greatrolein thisfield (Scmalleger,2012). Accordingto Virginia Library, about289 personshavebeenacquittedof chargeswhile17 others havebeenfoundguiltyby theuseof DNA (The United States Department of Justice, 2014).

Usesof DNA to SolveCrimes

Overthetwo decades, there havebeenconsiderableadvancesin criminaljustice:useof DNA evidence.DNA is usuallyusedto identifycriminalswherebiologicalevidenceprevailsaccurately(TheUnited States Department of Justice, 2014). Thesameis usedto acquitpeoplemistakenlyconvictedoraccused.Generally,DNAis usedto solvecrimesin two ways.Firstly,wherethere isa suspectandthesamplefrom thecrimesceneiscomparedwith thesuspect`sDNA. Secondly,ifthere is nosuspect,theDNA samplefrom thecrimescenecan be analyzedandcomparedto DNA profilesin thedatabases, and if there is resemblances, then the information can beused to unveil the criminal.


Endo,M., Yamamoto, S., Tatsumi, K., Emura, T., Hidaka, K., &amp Sugiyama,H. (2013). RNA-templated DNA origami structures. Chemicalcommunications (Cambridge, England), 49(28), 2879-81.

Schmalleger,F. (2012). today: An integrative introduction. UpperSaddle River, N.J: Pearson Prentice Hall.

TheUnited States Department of Justice (2014). Advancing Justice ThroughDNA Technology: Using DNA to Solves Crimes. Retrieved from:

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