Locus E
£43.00
The E locus controls whether a dog can produce dark pigment. E allows black or brown eumelanin, while e/e blocks it and creates red–yellow coats using pheomelanin. The e/e genotype also masks patterns from the K and A loci. Other E variants exist in specific breeds but aren’t included in this test.
Description
Locus E (Extension)
The E locus controls whether a dog can produce dark pigment (eumelanin).
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E = allows production of black/brown eumelanin
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e = recessive allele
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e/e = blocks eumelanin → red/yellow coat using pheomelanin
Genotypes:
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E/E → dark pigment (black/brown depending on B locus)
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E/e → dark pigment, carrier of e
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e/e → no dark pigment, red/yellow coat; masks K and A loci patterns
Other E variants exist in some breeds but are not included in this test.
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