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Evolutionary biology

The hydrogenosome's murky past

The evolution of specialized cellular powerhouses called hydrogenosomes has long confounded biologists. The discovery that in some cases they have their own genome sheds some much-needed light on the issue.

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Figure 1: Subunits of mitochondrial respiratory complex I.
Figure 2: The conflicting evolutionary positions of the Trichomonas vaginalis hydrogenosome.

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Gray, M. The hydrogenosome's murky past. Nature 434, 29–31 (2005). https://doi.org/10.1038/434029a

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