Originally Posted by riddlemethis
Ccr is actually the correct way to denote cream in a horse. CC is negative for cream. CcrCcr is homozygous. CR is just a simplified version of it. Along with NCR.
Cream is the mutation on the gene. And pearl should be technically written as CprlCprl.
Cr is the correct way to notate the allele. Check out the labs that run the tests - how do they notate it? As Cr. The addition of the locus is superfluous when discussing it, as the only time it matters what locus it is at is when discussing pearl. That would be like saying EeEe is a red horse, EEE_ is a black one. We know that it's on the C locus, it doesn't need to be put every time.