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Phenotype: The Metallic gene controls the distribution of pigment granules in the surface and basal layers of the scales of drakes.
Drakes homozygous (M/M) or heterozygous (M/m) for the dominant allele M have pigment granules in the basal layer only, and lack pigment granules in the surface layer.
This results in a metallic appearance of the scales.
Recessive alleles of the colorless gene are epistatic to Metallic; both c/c M/* and c/c m/m have translucent white scales.
In the absence of colorless, the Metallic gene produces the scale colors described below:
| | M/* | m/m |
| B/* D/* |
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| Steel | Charcoal |
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| | M/* | m/m |
| b/b D/* |
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| Copper | Earth |
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| | M/* | m/m |
| B/* d/d |
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| Argent | Dust |
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| | M/* | m/m |
| b/b d/d |
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| Gold | Sand |
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Phenotype Terms:
integument phenotype
pigmentation phenotype
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