Table 2. Gene homology in Metazoa.

Species	Number of protein-coding genes	Number of protein-coding genes with homologs (%)	Source
A. queenslandica	30,060	18,693 (62.2)	ref. 53
D. pulex	30,907	19,641 (63.5)	ref. 74
C. elegans	20,132	8,678 (43.1)	*
T. urticae	18,414	11,805 (64.1)	ref. 75
D. melanogaster	13,827	9,282 (67.1)	*
D. rerio	26,690	21,084 (79.0)	*
T. guttata	18,581	14,527 (78.2)	ref. 76
M. musculus	25,388	21,766 (85.7)	*

^*Values obtained from HomoloGene Release 65.⁵⁰