Sex chromosomal polymorphism in the earwig Forficula.
D000818:Animals; D005075:Biological Evolution; D001699:Biometry; D003434:Crossing Over, Genetic; D005260:Female; D014644:Genetic Variation; D007313:Insecta; D008297:Male; D008540:Meiosis; D008853:Microscopy; D011110:Polymorphism, Genetic; D011123:Polyploidy; D012621:Seasons; D012730:Sex Chromosomes; D012732:Sex Determination Analysis