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Association between α s1 ‐, β‐ and x‐casein loci in two Italian cattle breeds
Author(s) -
Voglino G. F.,
Carignano I.
Publication year - 1975
Publication title -
animal blood groups and biochemical genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 81
eISSN - 1365-2052
pISSN - 0003-3480
DOI - 10.1111/j.1365-2052.1975.tb01362.x
Subject(s) - linkage disequilibrium , biology , genetics , polymorphism (computer science) , genetic association , genotype , gene , single nucleotide polymorphism
Summary The genetic polymorphism α s1 ‐, β‐ and x‐caseins was examined by gel electrophoresis in two Italian breeds, Valdostana and Piedmont. The results obtained from acid and basic migration show that the gene frequencies of the two breeds are very similar. Non independent assortment of genotypes among these milk protein loci was also studied. Results of analyses carried out on loci pairs showed that the genetic complex αs1‐Cn B ‐β‐Cn A2 was the most common in both breeds. In addition, the measure of linkage disequilibrium or gametic association (denoted A) showed a close association between α s1 ‐Cn and β‐Cn , and between β‐Cn. and x‐Cn. No significant association was found between α s1 ‐Cn and x‐Cn. This is in line with the model proposed by Grosclaude et al. (1973).