288
L. G A L L I E N
FIG. 17. Sex reversal in Pleurodeles waltlii. Adults more than two years old. A, normal
male; B, intersex obtained in the course of a partial change (cf —> 9). Presence of a
testicular nodule on the left ovary (arrow). C, neofemale obtained after change of phenotypic sex of a genetic male. Reversal is complete, permanent, and functional. The individual does not differ from a control. D, return to its genetic sex of a genetic male
which had been changed to a neofemale. After several years a testis (T.) develops while
the ovary grows smaller and is represented only by completely sterile ovarian cysts
(arrow). The oviduct remains, giving evidence of the previous female condition. (After
Gallien.)
L. G A L L I E N
FIG. 17. Sex reversal in Pleurodeles waltlii. Adults more than two years old. A, normal
male; B, intersex obtained in the course of a partial change (cf —> 9). Presence of a
testicular nodule on the left ovary (arrow). C, neofemale obtained after change of phenotypic sex of a genetic male. Reversal is complete, permanent, and functional. The individual does not differ from a control. D, return to its genetic sex of a genetic male
which had been changed to a neofemale. After several years a testis (T.) develops while
the ovary grows smaller and is represented only by completely sterile ovarian cysts
(arrow). The oviduct remains, giving evidence of the previous female condition. (After
Gallien.)