Abnormal segregation of a haemagglutinating gene in a control flock.
D000483:Alleles; D000818:Animals; D002645:Chickens; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005799:Genes, Dominant; D006384:Hemagglutination; D006579:Heterozygote; D008297:Male; D008540:Meiosis; D008967:Molecular Biology; D012641:Selection, Genetic; D013588:Syphilis Serodiagnosis