Dexter Cattle Color Genetics
Dexter cattle occur in three different colors: black, red, and dun. Two pairs of genes that are located on separate chromosomes control these colors. Cattle chromosome 8 contains the B (brown = Dexter dun aka TYRP1) locus Cattle chromosome 18 contains the E (extension = red aka MC1R) locus Black and red is one pair of alternative colors.
In Dexter cattle, there are two different red genes. The. merican exter attle ssociation The Facts of Dexter Color Genetics Genetic Terms: Phenotype: The characteristics of an animal that can be seen and/or measured.
Unraveling the Genetics of Dexter Cattle: Understanding Colors and Traits
s how that trait will develop Allele: A version of a gene. Alleles occur in pairs, one being inherited from. The dun coloration in Dexter cattle is caused by the dilution of black pigment in the hair, producing shades of dark brown to gold.
This color dilution is caused by a recessive mutation. White Dexter Color Genetics White Dexters are typically characterized by their striking white color and black points. As the breed has grown, the ways in which the color patterns passed remained somewhat elusive.
Dexter Cattle
Fast forward to June of 2022, and we now have a test available that identifies the White Color variant! The test will determine the number of copies of the White variant any given. In the case of Dexter coloration, we will consider our baseline color to be black. There are two completely separate genes that will make Dexters a color other than black.
In both cases, these colors are recessive to black, so the animal must receive the same non. tation that leads to Dexter dun brown, unique among cattle.) and dun. But what makes a Red Dexter red or a Dun Dexter dun? O for that matter allows a Black Dexter to have a colour or genes are involved in producing these colors.
Understanding the Genetics of Coat Colour - Angus Australia
Clear as mud allele which is considered the original version of this gene. Black, ED, is dominant over red. Dexter cattle occur in three distinct colors: black, red, and dun.
Two pairs of genes that are located on separate chromosomes control these colors. Black and red is one pair. Genetics and Labs Genetic testing can be a helpful tool for ADCA Dexter breeders.
Not only does it give us specific information about genetic characteristics, it also helps the association safeguard the validity of our pedigrees with genetic markers and parentage verification. However, since other genes are involved with the color of the nose/eyeliner, and the darkness of the coat, there are exceptions, and you cannot be sure of the animal's red genotype without a test, (which is available at virtually any laboratory doing cattle genetic testing). The unique color of Dexter Dun Out of 20 different cattle breeds only Dexters carry a brown mutation.
