.ÖzetStarch-gel elekîroforez tekniği ile belirlenen TfA,TfB,Tfu,TfT>, ve TfE ergenlerininsıklıkları, sırasıyla Morkaramarida 0.341,0.161,0.222,0.266,0.010; Merinosuz0.160,0.175, 0.277, 0.340, 0.048; ÎvesVde 0.269,0.355,0149,0.167, 0.060olmuştur. Transferrin genlerinin ırklar arasındaki dağılışları önemli derecede,(P<0.001) farklılık göstermiştir (kikare: 79.1, s. d: 8). Gen sıklığının koyun yaşmabağımlılığı önemsiz olmuş ve yapılan ayıklamanın beta-globulin gen yerini etkilemediğianlaşılmıştır.Sürülerde 4'ü homozigot (TfAjTfA,TfBjTf*, Tf*/7JM,Tfn¡Tfn,) ve 10'uh eterozigot (TfTf*, Tf-* / 77"1M> TfA/ TfD, TfA/ TfE, Tf*! TfM, Tf*\ Tfn, Tf*! TfMl Tfv, TfMi TfE, Tf°! TfE,) olmak üzere toplam 14 genotip ortaya çıkarılmıştır.Bunlardan TfMITfE tipi Morkaraman ve ÎvesVde, TfAjTfE tipi Merinos'da,TfEjTfE tipi ise ırkların hiçbirinde görülmemiştir.Beta-globulin fenotiplerinin ampirik ve teorik dağılışları arasındaki farklarMorkaraman {kikare:42.2) ve Merinos*da (kikare: 30.7) çok önemli (P<0.001);ÎvesVde (kikare: 5.0) önemsiz olmuştur. Yabancı damızlıklara kapalı sürüleriçinde hat geliştirilmiş olması Hardy-Weinberg dengesinden uzaklaşmanın nedeniolarak görülmüştür.SummaryGenetics of Beta-Globulin Polymorphism and Its Association With Quantitatve Characters in Atatürk University Flocks: I. Genetic Analysis87The frequencies for TfA,TfB,TfM,TfD and TfE which were typed by starchgel electrophoresis were 0.341,0.161,0.222,0.266,0.010 in Morkaraman; 0.160,0.175,0.277,0.340,0.048 in Merino and 0.269,0.355,0.149,0.167, C.060 in Awassiewes, respectively. The distribution of transferrin genes differed significantly(P<0.001) between the three breeds (chi-square; 79.1; d. f: 8). Gene fiequencieswere significantly independent from the age of ewe arid culling did not affectbeta- globulin locus.4 homozygous (TfA/TfA,TfB/TfB, TfM/TfM, TfD/TfD) and 10 heterozygous(TfA/TfB,TfA/TiM,TfA/TfD, TfA/TfE,TfB/TfM,TfB/TfD, TP/Tf6, TfM/TfD, TfM/TfD/TiE) were determined in the flocks. The TfM/TfE, genotypes were not foundin Morkaraman and Awassi ewes, while the TfE/TfE type was not observed inany of the breeds.Differences between empirical and theoretical distributions for beta-globulinphenotypes were significant (P<0.001) in Morkaraman (Chi-square: 42.2) andMerino (ch'-square: 30. 1) but notsignificant in Awassi (chi-square: 5.0). Significantdeparture from Hardy-Weinberg equilibrium was probably due to the factsthat the flocks were closed to gene flow and the two inhered lines had been developedin Morkaraman and Merino ewes.