Description
Understanding Results
Possible Genotypes:
BB– does not carry brown
Bb– brown carrier
Bb2– brown carrier
bb– brown phenotype
For example, with Labrador Retrievers there are three (3) accepted coat color phenotypes (what you can see): Black, Yellow, and Chocolate. However, there are nine (9) possible reported genotypes (what you cannot see) for the E and B loci and therefore 81 possible breeding combinations.
Black Coat: 4 possible genotypes- EEBB (black with no hidden colors), EeBB (black with hidden yellow), EEBb (black with hidden chocolate), EeBb (black with hidden yellow and chocolate)
Yellow Coat: 3 possible genotypeseeBB(yellow with hidden black), eeBb (yellow with hidden black and chocolate), eebb (yellow with hidden chocolate- dogs will exhibit liver noses)
Chocolate Coat: 2 possible genotypes- EEbb (chocolate with no hidden colors), Eebb(chocolate with hidden yellow)
DNA markers tested – S41C, 345delP, Q331X
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