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An agouti dog, also called wolf sable. In dogs, the agouti gene is associated with various coat colors and patterns. [10]The alleles at the A locus are related to the production of agouti-signaling protein (ASIP) and determine whether an animal expresses an agouti appearance and, by controlling the distribution of pigment in individual hairs, what type of agouti.
A cat hair showing agouti coloration A domestic rabbit with agouti coloration. Agouti is a type of fur coloration in which each hair displays two or more bands of pigmentation. [1] [2] The overall appearance of agouti fur is usually gray or dull brown, [3] although dull yellow is also possible.
C is the wildtype allele resulting in full pigmentation and is completely dominant to all other known alleles at the locus. Point=c s is the point allele associated with the Siamese colorpoint pattern. Sepia=c b is an allele called sepia (or solid), and is most associated with Burmese cats. It produces a pattern similar to the Siamese ...
Every hair in the dog coat grows from a hair follicle, which has a three phase cycle, as in most other mammals. These phases are: anagen, growth of normal hair; catagen, growth slows, and hair shaft thins; and; telogen, hair growth stops, the follicle rests, and the old hair falls off—is shed. At the end of the telogen phase, the follicle ...
Red hair, also known as ginger hair, is a human hair color found in 2–6% of people of Northern or Northwestern European ancestry and lesser frequency in other populations. It is most common in individuals homozygous for a recessive allele on chromosome 16 that produces an altered version of the MC1R protein.
For example, the "A" gene codes for hair color, a dominant "A" allele codes for brown hair, and a recessive "a" allele codes for blonde hair, but a separate "B" gene controls hair growth, and a recessive "b" allele causes baldness.