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Black - S//S or S//+ at the S locus
Spread (S)
Locus S locus
Genetic symbol S
Common name Spread
Inheritance Autosomal recessive
Mutation type Colour modifier
Description "Spreading" of tail bar colour throughout the bird, so as to create a black pigeon on blue/black pigment.
History Ancient
Commonly found in breeds such as Many, most breeds

Spread is an allele at the S locus. This mutation is dominant to wild type.



Spread is an autosomal dominant mutation. This means that only one parent of either sex needs to carry the mutant gene for it to express in the next generation. Unless it is hidden by another modifier, a pigeon not expressing this trait will not pass it onto its children.