The Mechanism And Physiology of Sex Determination Translated By William J Daki
The Mechanism And Physiology of Sex Determination Translated By William J Daki
Richard Benedict Goldschmidt
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, " Hoden und Brunstorgane des braunen Landfrosches. " Pfliiger's Arch. , 126, 1909. — Smith, G. , "Studies in the Experimental Analysis of Sex, V, VI. " Qu. J. Micr. Sc, 56, 57, 191 1. — Harms, W. , " Hoden und Ovarialinjektionen bei Rana fusca-Castraten. " Pfliiger's Arch. , 133, I9 IQ - PHYSIOLOGY OF SEX INHERITANCE 107 there are even statements to the effect that testis or male gonad tissues develop. The same cock feathering develops after castra- tion of females (ducks). Consequently the h...ormones of the ovary must exert some repressing influence on the characters of the opposite sex. The fact that the latter develop at all after the elimination of the reproductive organs shows, however, that in the birds there is something of the insect type — the centralized hormone production is not absolutely necessary for sexual differentiation. The same thing exactly is illustrated by another important fact, the presence of gynandromorphism in birds. We shall see later that gynandromorphs are sex mosaics occasioned through the abnormal distribution of the sex chromo- somes.
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