Labrador Retriever coat colour genetics fur colour but those with black skin can potentially produce a Dudley. Dudleys breed true for both fur and skin. The ability of the E locus to override the coat colour directed by the B locus is a classical example of epistasis, where multiple genetic loci affect the same observed trait. The E locus also determines whether the phenotype due to the third genetic locus affecting coat colour will be evident. This locus is recognised as affecting coat colour through the expression of pheomelanin, the pigment responsible for red and yellow pigmentation. The effects on pheomelanin pigmentation are only seen
Like Colour to the Blind Like Colour to the Blind Like Colour To The Blind (1998) is the third in a series of four autobiographical works by internationally bestselling autistic author Donna Williams. Once published in the US using the American spelling 'color', it is now published worldwide by Jessica Kingsley Publishers using the UK spelling 'colour'. It has been published in several languages worldwide. "Like Colour To The Blind" covers Williams' relationship and 'accidental marriage' to 'Ian', a man on the autistic spectrum as she exorcises the vast array of stored behaviours, responses, actions and phrases from her repertoire to discover what is left