DNA fingerprinting

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Introduction & Top Questions References & Edit History Quick Facts & Related Topics

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In DNA fingerprinting, fragments of DNA are separated on a gel using a technique called electrophoresis. This creates a pattern that can be analyzed and that is unique to each individual, with the exception of identical twins.

Learn how a genetic fingerprint is made using agarose gel, Southern blotting, and a radioactive DNA probe

Learn how DNA thermal cycler employs polymerase chain reaction to copy DNA strands

For Students

DNA fingerprinting summary

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DNA fingerprinting: References & Edit History

More Articles On This Topic

Assorted References

evidence
- In evidence: Examination and cross-examination
forensic anthropology
- In forensic anthropology: Historical developments
police work
- In police: DNA fingerprinting
recombinant DNA
- In recombinant DNA: Diagnostics
usage
- In fingerprint

Article Contributors

Primary Contributors

The Editors of Encyclopaedia Britannica

Other Encyclopedia Britannica Contributors

Article History

Type	Description	Contributor	Date
	Add new Web site: BMC - BMC Genomic Data - Genotyping faecal samples of Bengal tiger Panthera tigris tigris for population estimation: A pilot study.	Emily Rodriguez	Dec 06, 2024
	Add new Web site: Council of Scientific and Industrial Research - DNA Fingerprinting Technology - Its Success and Future.	Aakanksha Gaur	Oct 12, 2024
	Add new Web site: Open Oregon Educational Resources - MHCC Biology 112: Biology for Health Professions - Gel Electrophoresis and DNA Fingerprinting.	Gloria Lotha	Jun 11, 2024
	Add new Web site: Pressbooks - DNA fingerprinting.	Gloria Lotha	Jan 19, 2024
	Add new Web site: Nature - Forensics, DNA Fingerprinting, and CODIS.	Aakanksha Gaur	Sep 21, 2023
	Add new Web site: National Center for Biotechnology Information - PubMed Central - DNA fingerprinting in forensics: past, present, future.	Aakanksha Gaur	Mar 07, 2023
	Add new Web site: Biology LibreTexts - DNA Fingerprinting.	Emily Rodriguez	Dec 16, 2022
	Add new Web site: University of Leicester - The history of genetic fingerprinting.	Gloria Lotha	Sep 27, 2022
	Top Questions updated.	The Editors of Encyclopaedia Britannica	Nov 21, 2019
	Added information on the use of DNA fingerprinting for resolving legal disputes.	Kara Rogers	Nov 14, 2019
	Corrected display issue.	Adam Augustyn	Apr 26, 2018
	Article revised and updated to include information on the use of microsatellites in DNA fingerprinting.	Kara Rogers	Dec 12, 2014
	Add new Web site: Official Site of Roger Fenton.	Yamini Chauhan	Jan 30, 2014
	Add new Web site: WebMD - What Is DNA Fingerprinting?	Yamini Chauhan	Jan 29, 2014
	Add new Web site: Buzzle.com - DNA Fingerprinting.	Surabhi Sinha	Dec 23, 2013
	Added information on refinements to DNA fingerprinting that have increased the sensitivity of the technique.	Kara Rogers	Sep 18, 2009
	Added new Web site: DNA Testing: Introduction and Index.	Gloria Lotha	Jun 01, 2006
	Article added to new online database.	The Editors of Encyclopaedia Britannica	May 03, 1999