OMIA 000576-9796 : Knobbed acrosome in Equus caballus

In other species: pig , sheep , cattle , dog

Category: Reproductive system phene

Possibly relevant human trait(s) and/or gene(s) (MIM number): 606165 (gene)

Links to MONDO diseases: No links.

Mendelian trait/disorder: unknown

Considered a defect: yes

Cross-species summary: The presence of a protrusion (knob) on the acrosome (cap) of a sperm. Associated with sterility. Also known as Knobbed Acrosome Defect (KAD)


1982 Hurtgen, J.P., Johnson, L.A. :
Fertility of stallions with abnormalities of the sperm acrosome Journal of Reproduction and Fertility Supplement 32:15-22, 1982.

Edit History

  • Created by Frank Nicholas on 06 Sep 2005