VGO-0022
QUESTION
Freemartin is associated with?
OPTIONS
(A) Homozygotic twin
(B) Heterozygotic twin
(C) Both (A) and (B)
(D) None of the above
ANSWER
(B) Heterozygotic twin
EXPLANATION
Freemartinism classically affects the female member of a dizygotic male-female twin pair in cattle. Placental vascular connections allow exchange of cells and male developmental signals, disrupting female reproductive tract development. The option labeled heterozygotic is intended to mean dizygotic or nonidentical twins. Monozygotic twins ordinarily share the same chromosomal sex and do not represent the usual setting for freemartinism.
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Veterinary Gynaecology and Obstetrics · 240 Questions
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