title: Why so few pseudogenes in tetraploid species?
authors.forename: D
authors.initials: D
authors.lastname: Larhammar
authors.forename: C
authors.initials: C
authors.lastname: Risinger
mesh_terms: D000818:Animals; D018076:DNA, Complementary; D005399:Fishes / Q000235:genetics; D006062:Gonadotropins / Q000235:genetics; D013006:Growth Hormone / Q000235:genetics; D005810:Multigene Family; D011003:Ploidies; D011544:Pseudogenes; D014982:Xenopus laevis / Q000235:genetics
chemical_list: D018076:DNA, Complementary; D006062:Gonadotropins; D013006:Growth Hormone