Polymorphism in a casein fraction of sows' milk

✍ Scribed by R. J. Gerrits; R. R. Kraeling; C. M. Kincaid

• Book ID: 104784844
• Publisher: Springer
• Year: 1969
• Tongue: English
• Weight: 192 KB
• Volume: 3
• Category: Article
• ISSN: 0006-2928
• DOI: 10.1007/bf00485719

✦ Synopsis

Polyacrylamide vertical gel electrophoresis was used to separate the caseins of sows' milk. Polymorphism was found in a region of the gels designated Cn3. The Cn a polymorphism consigts of two bands which appear to be controlled by two codominant alleles designated Cn3 A and Cn3 B. Homozygotes possess one band and heterozygotes possess both bands of equal intensity giving the following phenotypes: Cn3A , Cn3AB , and CnaB. A chi-square test for goodness of fit of the observed phenotypes to that expected by the Hardy-Weinberg equilibrium formula and a segregation analysis of eight matings involving 19 female progeny conform to the hypothesis that the Cn 3 polymorphism is controlled by two eodominant autosomal alleles. Further family studies will be necessary to confirm the genetic control of the Cn a polymorphism.