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The BR1 Brindle Test: What the UC Davis MBTPS2 Test Tells You and What It Does Not
Practical summary for breeders The BR1 test answers one specific question: does this horse carry the MBTPS2 c.1437+4T>C variant? If yes, the brindle pattern is heritable through X-linked transmission. If no, the pattern is likely not heritable. The test does not diagnose chimerism, mosaicism, or IP. A summary of the breeding implications: Parent genotype Offspring…