Germ cells control sex determination in hydra.
D000818:Animals; D012734:Disorders of Sex Development; D005260:Female; D006829:Hydra / Q000502:physiology*; D008297:Male; D010053:Ovary / Q000637:transplantation; D010641:Phenotype; D012732:Sex Determination Analysis; D013737:Testis / Q000637:transplantation