Categories: Reproductive system phene

Possible human homologue (MIM number): 606165 (gene)

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)

Species in which this phene is found:
dog (Canis lupus familiaris)
horse (Equus caballus)
pig (Sus scrofa)
taurine cattle (Bos taurus)
sheep (Ovis aries)