The Sex Ratio in the Cross of Phasianus Torquatus [Female] x Gallus Domesticus [Male]

Abstract

Ring-neck pheasants (Phasianus torquatus) [female][female] were inseminated with sperm from Creeper or Leghorn [male][male]. Of 135 offspring capable of being sexed, 66 were [male][male], 69 [female][female]. In the reciprocal cross, various authors have found a striking preponderance of [male][male]. Differential sex ratios from reciprocal hybrid matings, and interpretations that have been suggested, are briefly reviewed.