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Coat Color and Pattern in English Shepherds
Clear Sable and White
Clear sable coloring is caused by a recessive allele at the "Extension"
locus. Clear sable dogs possess two copies of this recessive ("e"),
and do not produce black pigment in their coat. These dogs may carry
alleles for either solid black (K) or any of the agouti regulated
patterns (tanpoint or shaded sable), but these patterns will not be
expressed.
The alleles will produce white markings are relatively recessive.
The traditional white pattern in English Shepherd's is "Irish"
pattern, and is requires that a dog inherit two alleles for white
spotting ("s"). Dogs that carry one allele for Irish pattern
and one for additional white (either piebald or extreme white) are
sometimes referred to as "white factored".
Thomas'
Angel
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