Interactions of differentiated primary sex factors in Chironomus tentans.
Different populations of Chironomus tentans, possibly representing geographically isolated races, have two differentiated genic mechanisms of sex determination involving either a dominant male-determining factor in the left arm of chromosome 1 or a dominant female-determining factor at the right tip of chromosome 1. In crosses between these populations, the male-determining factor is epistatic to the female-determining factor. No evidence of intersexuality has been found in such crosses.
D000818:Animals; D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D004175:Diptera; D005260:Female; D005298:Fertility; D005799:Genes, Dominant; D005838:Genotype; D007814:Larva; D008297:Male; D012469:Salivary Glands / Q000166:cytology; D012730:Sex Chromosomes; D012732:Sex Determination Analysis