title: Self- and cross-fertilization in the compound ascidian Botryllus schlosseri.
mesh_terms: D000818:Animals; D002816:Chordata, Nonvertebrate / Q000196:embryology / Q000502:physiology*; D003433:Crosses, Genetic; D005306:Fertilization; D005838:Genotype; D007814:Larva / Q000254:growth & development; D008675:Metamorphosis, Biological; D010641:Phenotype