Bovine Freemartinism
Aetiology
- Results from sexual modification of a female twin by the in-utero exchange of blood from a male fooetus.
- Freemartin is XX genetic female, but becomes an XX/XY chimera.
Diagnosis
Morphology
- Gonads range from modified Ovaries to structures resembling Testes which are intra-abdominal and do not descend through the inguinal canal (Cryptorchid).