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Table 1 Protein domain gains and loss comparison between lophotrochozoans and ecdysozoans

From: Strong functional patterns in the evolution of eukaryotic genomes revealed by the reconstruction of ancestral protein domain repertoires

  Ancestor domains Extant domains
  Gains Losses Present Mean Standard deviation Genomes analyzed
Lophotrochozoans 16 545 4,215 3,605 320 3
Annelids 16 721 4,039 3,602 393 2
Ecdysozoans 24 736 4,032 3,202 190 12
Arthropods 38 864 3,918 3,256 172 9
Nematodes 39 1,477 3,306 3,039 143 3
  1. In this table, gains and losses are relative to the last common ancestor of deuterostomes and protostomes, the Urbilateria. For the calculation of extant domain statistics, data from parasitic species is omitted (the nematode Brugia malayi and the flatworm Schistosoma mansoni).