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Linkage relationships among loci of polymorphisms in blood and milk of cattle

Linkage relationships among loci of polymorphisms in blood and milk of cattle

Journal of Dairy Science 64(1): 71-76

Sequential probability tests were employed to examine genetic linkage among cattle A, B, C, F, J, L, M, S, Z and R' blood group loci, the Hb locus, the serum transferrin, amylase and alkaline phosphatase loci, and the milk protein loci .beta.-lactoglobulin, .alpha.S1-casein, .beta.-casein and .kappa.-casein. Linkage was evident between the A and Hb loci, the J and .beta.-lactoglobulin loci, the .alpha.S1-casein and .beta.-casein loci, the .alpha.S1-casein and .kappa.-casein loci, and the .beta.-casein and .kappa.-casein loci. Recombination fractions for these respective combinations were 0, 0.18, 0.03, 0.04 and 0.06. There was a suggestion of possible loose linkage (recombination fraction = 0.4) between the .beta.-lactoglobulin locus and the casein complex. Linkage could be excluded for most other combinations at 0.25 recombination.

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Accession: 000922265

Download citation: RISBibTeXText

PMID: 7264022

DOI: 10.3168/jds.S0022-0302(81)82530-1

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