title: CYTOLOGICAL BASIS OF "SEX RATIO" IN DROSOPHILA PSEUDOOBSCURA.
mesh_terms: D000705:Anaphase; D000818:Animals; D002875:Chromosomes; D004330:Drosophila; D005823:Genetics; D008297:Male; D008540:Meiosis; D012106:Research; D012723:Sex; D012730:Sex Chromosomes; D012744:Sex Ratio; D013090:Spermatocytes; D014960:X Chromosome; D014998:Y Chromosome
keywords: CHROMOSOMES; DROSOPHILA; EXPERIMENTAL LAB STUDY; GENETICS; SEX