The inheritance of red, roan and white coat colour in dairy shorthorn cattle
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Inheritance of red, white and roan in Shorthorn cattle is best explained on Ibsen’s 1933 theory that red (R) is hypostatic and homozygous in all Shorthorns, and that white is due to a factor (N) which in the heterozygote gives roan.
Recorded exceptions to the main plan of inheritance are explained by the fact that genotypic roan extends from complete red to complete white in the phenotype.
KeywordsCoat Colour White Hair Mistaken Identity Wrong Description Colour Inheritance
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