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Homozygous rusty blue check.
Homozygous rusty blue check.
Locus ry locus
Genetic symbol ry
Common name Rusty
Inheritance Autosomal recessive
Mutation type Colour modifier

Rusty is an allele at the ry locus. This mutation is recessive to wild type.



Rusty is an autosomal recessive mutation. This means that both parents need to carry the mutant gene for it to express in the next generation. As a recessive mutation, it is possible for this trait to be carried by a bird who does not visually express it.