espèce (1) spectacle (1) gène (1) dose (1) dosage (1) compensation (1) Causes (1) Genes (1) Wages (1) Variations (1) Species (1) Sex chromosomes (1) Sex (1) Red junglefowl (1) Pensions (1) Expression (1) Degeneration (1) Chickens (1) Animals (1) Organisms (1) Regions (1) Use (1)