Influence of chick or quail embryonic testes on the reproductive system of the quail embryo.

Abstract

The reproductive system of female quail embryo undergoes masculinization under the influence of chick and quail embryonic testis grafted into an extraembryonic coelom. Müllerian ducts undergo regression. The left gonad transforms into an ovotestis and the right gonad either does not develop or transforms into a small testis. Testicular chick or quail graft does not affect the development of the cortical ovarian-like region in the left testis of male hosts. In some quail testicular grafts developing in female quail hosts cortical region is retained longer than normally.