牛のB血液型における表現型分布からコンピュータによりフェノグループを見つけ出す方法

概要

論文の詳細を見る
A computer-aided procedure for finding out what the probable phenogroups are from the phenotype distribution in the bovine B blood group system was worked out.In this procedure, the estimates of phenogroup frequencies calculated by the gene counting method are used.To perform the procedure, three FORTRAN 77 computer programs 1-1, 1-2 and GFCO were developed**.With data from 2, 954 individuals of 206 phenotypes including genotypes composed of every possible combination of 38 phenogroups identified in the Holstein breed of Japan, the following regression equation was derived: P=exp {-exp (1.0065-1.2419q N+0.0611q2N2)} where q is the fre quency of a phenogroup existing in a population, N is the number of individuals sampled from the population, and P is the predicted proportion where a phenogroup is found from the size of the sample.The coefficient of determination R2 was 0.92, and the regression equation fitted well.The proportion where a phenogroup was found from the sample in a population was predicted as P=0.99 when q N=6.77.Also, the frequencies of a phenogroup found in the proportion of 99% or over in a population were predicted as q=0.1353 or over when N 50, q =0, .0677 or over when N 100, and q=0.0338 or over when N=200.On the other hand, the proportion where a phenogroup with a frequency of1/(2N) in the sample was found was predicted as P=0.22 (q N=0.50).
社団法人日本畜産学会の論文