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Curly hair. W is dominant to w, but the dominance of W > w is incomplete. W/W dogs have coarse hair, prominent furnishings and greatly-reduced shedding. W/w dogs have the harsh wire texture, but decreased furnishings, and overall coat length and shedding similar to non-wire animals. [63]
Woolly hair. Woolly hair is a difficult to brush hair, usually present since birth and typically most severe in childhood. [1] It has extreme curls and kinks, occurs in black people and is distinct from afro-textured hair. [3] The hairs come together to form tight locks, unlike in afro-textured hair, where the hairs remain individual. [1]
The Agouti gene, with its dominant A allele and recessive a allele, controls the coding for agouti signaling protein (ASIP; ). The wild-type dominant A causes the banding and thus an overall lightening effect on the hair, while the recessive non-agouti or "hypermelanistic" allele a does not
OMIM (Online Mendelian Inheritance in Man) [3] is a comprehensive database of human genotype–phenotype links. Many visible human traits that exhibit high heritability were included in the older McKusick's Mendelian Inheritance in Man. Before the discovery of genotyping, they were used as genetic markers in medicolegal practice, including in ...
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. [ 1 ]
Giant axonal neuropathy is a rare, autosomal recessive [ 1] neurological disorder that causes disorganization of neurofilaments. Neurofilaments form a structural framework that helps to define the shape and size of neurons and are essential for normal nerve function. A distinguishing feature is its association with kinky, or curly, hair; in ...
Co-dominant expression of genes for plumage colours. In cases of co-dominance, the genetic traits of both different alleles of the same gene-locus are clearly expressed in the phenotype. For example, in certain varieties of chicken, the allele for black feathers is co-dominant with the allele for white feathers.
If a dog possesses the dominant phenotype for the extension allele (genotype EE or Ee), then it will display the fur colouration determined by its brown locus genotype, while a dog with the recessive extension trait (ee) will have a yellow coat with either black (BB, Bb) or brown (bb) exposed skin. This results in the three coat colours seen: