CGR

Chaos Game Representation

Graphical representation of genomes and oligonucleotide frequencies. Represents DNA primary sequence organization: each base is mapped to a corner of a square and every position of the sequence is plotted in turn.

1

Parameters

Paste the sequence to represent and set the image size.

2

Description

Chaos Game Representation (CGR)

As described by Jeffrey (1990). Represents DNA primary sequence organization.

Starting from the centre of the square, every base of the sequence moves the current point halfway towards its corner, and that new position is plotted. Unlike FCGR, each successive position is drawn rather than an oligonucleotide frequency.

start A (Adenine) C (Cytosine) G (Guanine) T (Thymine)

This script has been extracted from online tools at insilico.ehu.es. CGR images for all sequenced bacterial genomes are available here. To understand how CGR images are generated, check here. Example representations for E. coli K12 : CGR, FCGR. Text taken from biophp.org.