Table 1 Initial data for the analysis of gain and loss of genes in distant phyla of the animal kingdom.

Arabidopsis thaliana

ftp://ftp.arabidopsis.org/home/tair/home/tair/

27416

14.72

Amphimedon queenslandica

http://getentry.ddbj.nig.ac.jp/top-e.html?ACUQ00000000

30060

11.87

Branchiostoma floridae

http://genome.jgi-psf.org/Brafl1/Brafl1.home.html

50817

24.34

Capsaspora owczarzaki

http://www.broadinstitute.org/annotation/genome/multicellularity_project/GenomeDescriptions.html

8792

6.2

Daphnia pulex

http://wfleabase.org/genome/Daphnia_pulex/

30810

10.94

Homo sapiens

http://www.gencodegenes.org/

87069

42.55

Lottia gigantea

http://genome.jgi-psf.org/Lotgi1/Lotgi1.home.html

23851

9.72

Monosiga brevicollis

http://genome.jgi-psf.org/Monbr1/Monbr1.home.html

9171

5.77

Nematostella vectensis

http://genome.jgi-psf.org/Nemve1/Nemve1.home.html

27273

9.76

Saccoglossus kowalevskii

ftp://ftp.hgsc.bcm.tmc.edu/pub/data/Skowalevskii/fasta

13149

8.14

Trichoplax adhaerens

http://genome.jgi-psf.org/Triad1/Triad1.home.html

27416

14.72

Strongylocentrotus purpuratus

http://www.spbase.org/SpBase/download/

42420

22.07