Columbian
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Introduction to the mutation that is described on this page. Allele symbol Co.
Contents
Relation to ASIP, Agouti
Etymology and Discovery
Named after a poultry exhibition in Columbia ?
Degree of dominance
Dominance order; see also Heterozygosity.
Phenotypic effect
Removes black/eumelanin from the body (breast and wingbands). Neck hackle black is not caused by this gene in the Columbian phenotype.
chick down
Removes/blurs chipmunk striping
rooster
Effective in one dose.
hen
Less powerful than on males.
Heterozygosity
- On females leaves smut on upper body, if any black pattern is removed.
- Removes the salmon breast of the females.
Epistatics
Suppressed by the stronger melanizing e-locus alleles Extended Black and Birchen.
Role in certain complex phenotypes
- Single Laced including or excluding the tail
- Quail
- Lakenvelder
