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Just copy and paste:. It is important to realize that the genetics of coat color is very complex and confusing. Research is ongoing, so what we know today can very well be proved untrue, may change, or be added to in the future. You could also just put the color in parenthesis at the end of the name like this: Lilac. Genotype for Lilac Gene: [bb dd] this 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. 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.
Body is solid lilac. Tan points can be clear or brindled. Lilac Brindle Lilac and Fawn Stripes with white markings in any de. Brindle dogs carry at least one Kbr gene and are always either ayay, or ayat at agouti. Brindled bodied dogs cannot have a Kb gene nor be atat. Genotype for Blue Gene: [dd]. Overview: Blue Bulldogs are diluted black dogs.
These dogs may or may not have a fawn undercoat when the hair is rubbed backwards. Body is solid blue. This puppy is also a Full Black and Tan Base, which means she is tan pointed. The points are there, but covered by the Seal [Kb] gene, which is higher on the hierarchy of genes.
Blue Merle in any de. Patches, nose, footp, and eyeliner is blue. Blue and Fawn Stripes with white markings in any de. Although hair is fawn, the nose, footp, and eyeliner is Blue. Genotype for Chocolate Gene: [bb]. Overview: Chocolate Bulldogs are diluted black dogs from a different dilution gene than the blue. The chocolate coat should be shiny and look brown against black objects or in the sun, unless the seal gene is involved which can give different undertones to the coat. Body is solid chocolate.
Thanks to Darr's Bullies for allowing us to use this photo. Chocolate Seal Chocolate and White in any de. Chocolate Merle in any de. Patches, nose, footp, and eyeliner is chocolate. Chocolate and Fawn Stripes with white markings in any de. Although hair is fawn, the nose, footp, and eyeliner is chocolate. Body is solid black. Black Seal Black and White in any de. Black Merle in any de. Patches, nose, footp, and eyeliner is black.
Black and Fawn Stripes with white markings in any de. At each locus, there can be found many variations or alleles that can be dominant or recessive in nature. Chromosomes come in pairs, so each dog has two different alleles at each locus on the chromosome pairs, and depending on the dominance of the alleles contained at the locus determines the color of the individual dog.
The genetic material of the dog is inherited one half from the mother and one half from the father. As in all the Tri Colors 3 colors on the dog one of which is always the tan points , the tan points are typically on the eyebrows, cheeks, front shoulders right above the chest area between the legs , around the tail, and partial on both front and back legs.
Tan points will not show up if the dog is white where the points would normally be. Tan points can also be hidden by other genes, such as the SEAL gene, as it is higher on the hierarchy of genes. Tan points can bleed through on some dogs when only one [at] is present. It normally takes a double [atat] dog to show tan points. To back this up, we conducted a private study to back up our thinking. Visit our Black Color Study for more info. Platinum is not a color, but is rather a lack of pigment. The preferred True Platinum has an all white coat.
Any where the dog is white could have hidden color, remember white takes out the color that would normally be there. The nose, footp, and eyeliner is the only thing affected by these color genes. Therefore, you can have a dog with it's original hair color, but with diluted pigment as noted. Visit our Sable vs Fawn Study for more info. The genes that cause dogs to be Brindle are not yet fully understood, even by the scientists themselves.
What we do know so far is that one of the markers on the K gene, specifically Kbr, is responsible for the brindle color on the coat, whether it be a partial or full brindleing, such as the Tan Points being brindled, which is what we call Trindle.
The K gene is confusingly called Dominant Black, because this gene shows as brindle, and black seal. ALL brindle dogs carry at least one K gene. It takes only one since it is a Dominant gene to show on the dog.
The Merle Gene dilutes random sections of hair to a lighter color which leaves Patches of the original color, sometimes these patches can be very small. If you start with a black dog and add the Merle Gene, you still have a black dog genetically, but with sections of the black diluted. Unlike the piebald pattern, these patches or sections may look jagged on the outer edges. This means you can have a merle dog and not see it visually. Merle affects only black based coat color. Eyes, and noses can also be merled. Black Merle dogs are often called Blue Merle because the Merle gene dilutes patches of black to a grey color.
Blue Merle on genetically Black Merle dogs is a widely used term, but is not correct. They should be called Black Merle, their nose, footpad, and eyeliner pigment is still black. If these dogs did not have the merle gene, they would be solid black. The term Blue merle, when used on black dogs is misleading because blue dogs should have the [dd] gene if they were truly blue.
A black merle dog will never have the double [dd] gene, but the True Blue Merle dog would always be [dd]. It is the patches on the dog that will visually define the dogs color and what it should be appropriately called. This can be backed up with DNA testing. Thus in the True Blue Merle dog, the patches that are left would be True Blue and the sections that are diluted would be a much lighter color blue.
This is the case in all the Rare Colors. The sections left on the lilac Merle dog are almost white, it is so light. Makes since when you think about it. There are 3 dilution genes at work in a Lilac Merle dog. Some of these colors will blend in with the diluted color so much, that DNA Color Testing may need to be done to be sure of the true color.
The Merle gene when doubled up, can, but not always does, cause health issues, mostly deafness and blindness. For this reason, two merles should not be bred together, as this could result in double Merle puppies with possible problems. These problems are virtually eliminated in single Merle gene dogs and the percentage of incidence is the same as in any breed, color, or pattern. Double Merle can be problematic because it can cause lack of pigment in certain vital areas, such as the eyes and inner ears.
Single merle dogs have plenty of pigment because they still have a non-merle allel to make pigment. Double Merles often have large areas of white where there is no pigment produced. We have used UC Davis for many years and recommend them above all other labs for color testing. Other labs have different lettering systems, which is very important to differentiate. Other genes restrict agouti expression such as the dominant black gene. The agouti test is also useful to help determine the color of dogs that have white patterns that may obscure the distribution of the colored pigment.
There are two alleles, the dominant full color B and the recessive brown b. Two copies of brown are needed to dilute black pigment to brown. For red or yellow dogs, the brown allele does not dilute the hair color, but will change the color of nose and foot p from black to brown if two brown alleles are present. B B: Full Color, no brown gene present. B b: Carrier, 1 copy of brown present.
There are two alleles, the dominant full color D and the recessive dilute d. Two copies of dilute are needed to lighten black pigment to grey, which we call blue, and red pigment to cream. D D: Full color, no dilute gene present. D d: Carrier, 1 copy of dilute present. This gene produces dominant black vs. K K: Full Dominant Black. This could present as Brindle or Seal and is confirmed visually. K N: Carrier, 1 copy of Dominant Black present.
N N: Does not carry Dominant Black. Merle only dilutes black pigment, so dogs with an MC1R ee genotype have no black pigment and thus do not express merle visibly. However, they can produce merle offspring. Dogs with Mc typically display little to no merling. Inheritance of merle is genetically unstable for both M and Mc alleles. During DNA replication and cell division, M may occasionally undergo poly-A tail reduction to produce Mc, while Mc may undergo expansion and revert to M.
M M: Full Merle. M Mc: Full Carrier. M N: Carrier. Mc Mc: Full Carrier. Mc N: Carrier. N N: Non-Merle. No copies of Merle or Cryptic Merle. A dog with one copy of the MITF variant has some white pattern expression, while a dog with 2 copies of the variant display more extreme white. Additional mutations in MITF or other white spotting genes appear to be present in some breeds that affect the amount of white being expressed.
In other breeds, piebald behaves as a recessive trait, that is 2 copies of piebald are needed to produce white spotting. N S: Carrier. Rare Bulldogs. Home Contact-About. Our Dogs.Blue fawn english bulldog puppies
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8 Rarest English Bulldog Colors