290
L. G A L L I E N
FIG. 18. Effects of steroid hormones in amphibians, partial reversal (intersexuality),
or no effect. A, Bombina ovaries at metamorphosis; B, testes at the same stage from an
individual treated with estradiol. The male or female condition develops according to the
nature of the genetic sex, whatever the hormonal treatment may be; C, Pelodytes, control
ovary at metamorphosis; D, Pelodytes, control testis at metamorphosis; E and F, two
views in Pelodytes, at metamorphosis, of an intersexual gonad, after treatment with
estradiol. (After Collenot.)
L. G A L L I E N
FIG. 18. Effects of steroid hormones in amphibians, partial reversal (intersexuality),
or no effect. A, Bombina ovaries at metamorphosis; B, testes at the same stage from an
individual treated with estradiol. The male or female condition develops according to the
nature of the genetic sex, whatever the hormonal treatment may be; C, Pelodytes, control
ovary at metamorphosis; D, Pelodytes, control testis at metamorphosis; E and F, two
views in Pelodytes, at metamorphosis, of an intersexual gonad, after treatment with
estradiol. (After Collenot.)