Related Experiment Video
Updated: Jun 27, 2026

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies
Published on: January 10, 2025
Gender dysphoria and gender change in an adolescent with 45,X/46,XY mixed gonadal dysgenesis
G Ocal1, M Berberoğlu, Z Siklar
1Department of Pediatric Endocrinology, Ankara University School of Medicine, Ankara, Turkey.
Abstract:
This is a report of a 13-year-old 45,X/46,XY patient who was assigned as female gender and had feminizing surgery during infancy. Psychological problems became progressively more severe from childhood to incapitation by age 13 years. Gender identity reversal was performed after extensive physiological testing. Because he wanted to have corrective surgery, his external genitalia sex reassignment was made male from female. There were surgical problems with his phalloplasty; after surgery at infancy there was reduction of the phallus with recession of the glans to the typical clitoral location. Genital response during sexual activity and satisfaction after reconstructive surgery for male genitalia are as yet unknown. This patient is a typical example for medical, psychological and surgical dilemmas of sex reassignment and the problems of early corrective surgery. Sufficient brain virilisation associated with undervirilised external genitalia is an important problem for assignment of gender identity.
Related Concept Videos
X and Y Chromosomes
The germline cells such as egg and sperm cells carry only half the number of chromosomes, i.e., 22 autosomes and one sex chromosome. All eggs have an X chromosome, while sperm cells can carry an X or...
Development of the Sexual Organs in the Embryo and Fetus
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the male...
The Y Chromosome Determines Maleness
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Signs of Puberty
The Ratio of X Chromosome to Autosomes
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
Socioemotional Experience and Gender Development

