From: Genome-wide characterization, evolution, structure, and expression analysis of the F-box genes in Caenorhabditis
F-box genes
Single genes
Tandem duplication
Percent
C. brenneri
594
78
315
53%
C. briggsae
192
64
82
43%
C. elegans
377
67
197
52%
C. remanei
1296
96
962
74%