title: Polymorphism of alkaline ribonuclease in the leucocytes of Black-and-White cattle.
abstract: Studies were carried out on the polymorphism of alkaline ribonuclease in Black-and-White cattle in the north-eastern region of Poland. Leucocytes isolated from peripheral blood were used. Three phenotypes were defined, consisting of the combination of two alleles. The gene frequency was: qA = 0,7082, qB = 0,2918. In calves the frequency of allele RNA-aseB and number of RNA-aseA/RNA-aseB heterozygotes were higher than in adult animals.
mesh_terms: D000818:Animals; D002417:Cattle / Q000097:blood*; D004592:Electrophoresis, Starch Gel; D005787:Gene Frequency; D007962:Leukocytes / Q000201:enzymology*; D010641:Phenotype; D011110:Polymorphism, Genetic; D012260:Ribonucleases / Q000235:genetics*
chemical_list: D012260:Ribonucleases