Lilac Bulldogs start out black, then diluted, not once but twice by the chocolate gene, then the blue gene. The [bb] allele dilutes the black to brown, and [dd] dilutes the black to blue. Try mixing blue and brown paint, you will get some shade of Purple or Lilac. The Lilac should be shiny and look weimaraner gray (or some shade of purple or lilac) against black objects or in the sun unless it is the Seal Color. The nose, eyeliner, & pads are some shade of purple.
In the case of the Lilac Fawn, although the HAIR is not diluted by the [bb,dd] genes, the pigment in the nose, foot pads, and eyeliner is diluted to purple which can vary in shade.
Lilac is is a combo gene, full blue and full chocolate combined.
Overview: Lilac Bulldogs start out black, then diluted not once, but twice, by the Chocolate Gene, then the blue gene. The [bb] dilutes black to brown, and the [dd] dilutes the black to blue. Try mixing blue & brown paint, you will get some shade of purple or lilac. The lilac coat should be shiny and looks very close to Weimaraner Grey, with many lighter & darker shades possible. Some lilac coats will have an under color shine through that can be green or pink or somewhere in between according to the light the dog is in. The nose, eyeliner, and footpads are also always some shade of purple/lilac.
Lilac is a Combination of 2 Genes
When you combine Full Chocolate with Full Blue, you get a dog that is colored Lilac. DNA for Lilac is bb dd, Full Chocolate + Full Blue
TYRP1 Gene. There are two allele: 1. B-dominant full base color 2. b-recessive brown
When two copies of brown are present, black pigment is diluted to brown. However, if the dog is red or yellow dogs, brown does not dilute the hair color, but does change the color of nose and foot pads from black to brown.
B/B: Does not carry brown-full base color, cannot have brown offspring
B/b: Dog is base color and carries 1 copy of brown
b/b: 2 copies of brown-full brown/chocolate
The gene d has had recent discoveries and has now been renamed d1. This mutation alone does not account for all dilute color phenotypes. A second and third dilution MLPH variant d2 and d3 has been identified. Still, two copies of any of the three dilution variants, or any combination of two of these, are necessary to lighten the color.
D/D No known dilute
D/d1 Carries 1 copy of dilute
D/d2 Carries 1 copy of dilute
D/d3 Carries 1 copy of dilute
d1/d1 Dilute, 2 copies of dilute
d2/d2 Dilute, 2 copies of dilute
d3/d3 Dilute, 2 copies of dilute
d1/d2 Dilute, 2 copies of dilute
d1/d3 Dilute, 2 copies of dilute
d2/d3 Dilute, 2 copies of dilute
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