• Bovine Freemartinism:
• Occurs in over $90\%$ of heterosexual twin pregnancies in cattle.
• Early chorionic vascular anastomoses allow sharing of fetal blood circulation between the male and female co-twins.
• Testicular hormones from the earlier-developing male fetus (Anti-Müllerian Hormone [AMH] and testosterone) enter the female co-twin's circulation:
• Müllerian ducts regress, preventing normal development of the uterus, cervix, and cranial vagina.
• The female co-twin is rendered permanently sterile (Freemartin).
• The male co-twin develops normal reproductive tracts and is typically fertile.
• nalysis:
• (Female is sterile): Correct.

Correct option: (2) Female is sterile