Physical map of the Lotharella oceanica nucleomorph genome. The genome is ~610 kbp in size with three chromosomes, shown artificially broken at their midpoint. Annotated genes are colored according to the functional categories shown in the lower right. The exact number of tandem repeats containing the ClpC and tfIIa-gamma genes on chromosome I is not known but was estimated to be at least five. Orange boxes indicate regions syntenic with the Bigelowiella natans nucleomorph genome (see text). Gray boxes show multi-copy regions. Genes mapped on the left side of each chromosome are transcribed bottom to top and those on the right, top to bottom.