DNA Barcoding

Definition

A method of species identification based on comparing a short, standardized DNA sequence (typically from the COI gene) to a database of known sequences.

Etymology

From the English words 'DNA' and 'barcode'. The term was coined by Paul Hebert et al. in 2003.

Example

DNA barcoding has been used to identify species of butterflies, even when they are morphologically similar.

Related Terms

• DNA Sequencing
• Species Identification
• COI Gene

Usage Notes

DNA barcoding is a powerful tool for identifying unknown species, but it relies on a comprehensive database of known sequences.