VGO-0160
QUESTION
Immotile spermatozoa due to perturbation of genesis of flagellum representing loose coils of spermatozoa is termed as?
OPTIONS
(A) Dag defect
(B) Cork screw defect
(C) Diadem defect
(D) Annular defect
ANSWER
(A) Dag defect
EXPLANATION
The Dag defect is a severe sperm-tail abnormality involving folding or coiling of the flagellum and midpiece, often with internal axonemal disruption and markedly reduced motility. Corkscrew defects primarily concern disorganization of the mitochondrial sheath. Diadem defects affect the sperm nucleus, and annular defects involve the annulus region. The described coiled, structurally defective flagellum best matches the Dag defect.
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Veterinary Gynaecology and Obstetrics · 240 Questions
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