title: Sonless, a sex-ratio anomaly in Drosophila melanogaster resulting from a gene-cytoplasm interaction.
mesh_terms: D000818:Animals; D003593:Cytoplasm; D004330:Drosophila; D005111:Extrachromosomal Inheritance; D005260:Female; D005808:Genes, Recessive; D008297:Male; D012641:Selection, Genetic; D012730:Sex Chromosomes; D012732:Sex Determination Analysis; D012744:Sex Ratio