title: Y chromosome function and spermatogenesis in Drosophila hydei.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004330:Drosophila / Q000235:genetics / Q000502:physiology*; D005796:Genes; D008297:Male; D008540:Meiosis; D013087:Spermatids / Q000502:physiology; D013090:Spermatocytes / Q000502:physiology; D013091:Spermatogenesis; D014998:Y Chromosome / Q000648:ultrastructure