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Waardenburg syndrome is a group of rare genetic conditions characterised by at least some degree of congenital hearing loss and pigmentation deficiencies, which can include bright blue eyes (or one blue eye and one brown eye ), a white forelock or patches of light skin. These basic features constitute type 2 of the condition; in type 1, there ...
Brown Eyes Baby. " Brown Eyes Baby " is a song recorded and co-produced by New Zealand-born Australian-American country music artist Keith Urban. [1] The song was written by fellow country music artist Morgan Wallen alongside Josh Thompson, Rodney Clawson, and Will Bundy. [2] [3]
Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye 's iris [ 1][ 2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [ 3]: 9. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of melanin in ...
Together, they account for brown, green and blue, but not hazel or grey eyes. Science is still working on how we get those. All blue-eyed people can trace their ancestry back to a single human ...
Albinism is a congenital condition characterized in humans by the partial or complete absence of pigment in the skin, hair and eyes. Albinism is associated with a number of vision defects, such as photophobia, nystagmus, and amblyopia. Lack of skin pigmentation makes for more susceptibility to sunburn and skin cancers.
Heterochromia iridum. Heterochromia is a variation in coloration most often used to describe color differences of the iris, but can also be applied to color variation of hair [ 1] or skin. Heterochromia is determined by the production, delivery, and concentration of melanin (a pigment ). It may be inherited, or caused by genetic mosaicism ...
This scattering effect combines with the underlying brown melanin to create the array of colors seen in hazel eyes. What Makes Hazel Eyes Unique? The most unique part about hazel eyes is the blend ...
The Brushfield spots are the spots between the inner and outer red circles. Brushfield spots are small, white or greyish/brown spots on the periphery of the iris in the human eye due to aggregation of connective tissue, a normal constituent of the iris stroma. The spots are named after the physician Thomas Brushfield, who first described them ...