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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Chromosoma. 2011 Nov 18;121(2):107–116. doi: 10.1007/s00412-011-0352-7

Figure 2.

Figure 2

Organization of the Drosophila bithorax Complex (BX-C). A. linear arrangement of the three genes in the BX-C, which are indicated by green arrows; orange ovals represent the transcription complex at the promoter of each gene whereas red spheres represent PREs and associated proteins. B. Interactions among the PREs and promoters of the genes result in a specific three-dimensional arrangement of the locus that results in repression of transcription. C. Multiple Hox gene loci can be co-repressed and associate at nuclear locations termed Pc bodies.