title: H-Y antigen expression in heterogametic males (XY) and females (ZW): a factor in reproductive strategy?
abstract: The cells of heterogametic females with ZW sex chromosomes express H-Y or H-W antigen. A hypothesis is formulated to explain why these animals are capable of 'practicing' amphigonia retardata, i.e., delay in actual fertilization of eggs by retaining viable sperm within the oviduct for a considerable time (several months).
mesh_terms: D000818:Animals; D001717:Birds; D002470:Cell Survival; D005260:Female; D005306:Fertilization; D006182:H-Y Antigen / Q000235:genetics / Q000276:immunology; D006649:Histocompatibility Antigens / Q000235:genetics / Q000276:immunology; D006801:Humans; D008297:Male; D012098:Reproduction; D012104:Reptiles; D012730:Sex Chromosomes; D012911:Snakes; D013094:Spermatozoa / Q000276:immunology; D013997:Time Factors; D029867:Xenopus Proteins
chemical_list: C037616:H-W antigen, Xenopus; D006182:H-Y Antigen; D006649:Histocompatibility Antigens; D029867:Xenopus Proteins