Hermaphroditism of the Apodidæ

Hermaphroditism

The diagnosis and treatment of hermaphroditism.

Until recently the determination of the sex of an individual was mainly based upon the gonadal structure, and the sexual individuality identified with this finding. Accordingly a person having testes was a man and one having ovaries a woman. In the hermaphrodites certain anomalies inside the genital tract were considered more or less as anatomical variations from the normal without more profoun...

The Diagnosis and Treatment of Hermaphroditism*

Until recently the determination of the sex of an individual was mainly based upon the gonadal structure, and the sexual individuality identified with this finding. Accordingly a person having testes was a man and one having ovaries a woman. In the hermaphrodites certain anomalies inside the genital tract were considered more or less as anatomical variations from the normal without more profoun...

A Case of Hermaphroditism in the Mouse *

In a recent article Hooker and Strong described a hermaphrodite mouse which was a member of the C57 black strain. They also reviewed the cases of hermaphroditism in rodents which have been recorded in the literature.8 An additional case occurred recently in our laboratory in a mouse of the dilute brown strain. This animal was a descendant of a line in which sexual abnormalities have occurred pr...

Sexual competition and the evolution of hermaphroditism.

The low density model produced by Tomlinson to describe the evolution of hermaphroditism is shown to undervalue the level of gain to hermaphrodites in small populations. This model is revised to take into account gains for hermaphrodites in breeding units where not only one but where both sexes of gonochorists occur. This revision permits hermaphrodites significant gains in populations as large...