From: Comparative rates of evolution in endosymbiotic nuclear genomes
Organism | Genome Compacted (compared to free-living relative) | AT bias | Codon Bias | Expression bias (highly expressed genes are less divergent and GC rich) | Divergent (compared to free-living relative) | |
---|---|---|---|---|---|---|
Organelle genomes of prokaryotic origin | Mitochondria | Y | Y | Y | Y | Y |
 | Plastids | Y | Y | Y | Y | Y |
Prokaryotic obligate intracellular symbionts | Wolbachia | Y | Y | Y | Y | Y |
 | Wigglesworthia | Y | Y | Y | Y | Y |
 | Buchnera | Y | Y | Y | Y | Y |
Organelle genomes of eukaryotic origin | Guillardia theta nm | Y | Y | ? | ? | Y |
 | Bigelowiella natans nm | Y | Y | ? | ? | Y |
Eukaryotic obligate Intracellular parasites | Plasmodium | -* | Y | Y | Y | -* |
 | Toxoplasma | -* | Y | ? | ? | -* |
 | Cryptosporidium | -* | No | ? | ? | -* |
 | E. cuniculi | Y | No | ? | ? | Y |