Search results
Results From The WOW.Com Content Network
Brown hair, also referred to as brunette (when female) or brunet (when male), is the second-most common human hair color, after black hair. It varies from light brown to dark hair. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin .
A variety of human hair colors; from top left, clockwise: black, brown, blonde, white, red. Human hair color is the pigmentation of human hair follicles and shafts due to two types of melanin: eumelanin and pheomelanin. Generally, the more melanin present, the darker the hair. Its tone depends on the ratio of black or brown eumelanin to yellow ...
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 ...
Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among individuals is caused by variation in pigmentation, which is the result of genetics (inherited from one's biological parents ), exposure to the sun, disorders, or some combination thereof.
They are also known as the " Philippines Negrito "; and they are included in the wider Negrito grouping of Southeast Asia, with whom they share superficial common physical characteristics such as: dark skin tones; short statures; frizzy to curly-hair; and a higher frequency of naturally lighter hair colour ( blondism) relative to the general ...
Poliosis. Depigmentation of sections of skin and hair in 48-year-old man with vitiligo and poliosis. Poliosis (also called poliosis circumscripta) is the decrease or absence of melanin (or colour) in head hair, eyebrows, eyelashes, or any other hirsute area. It is popularly known as white forelock when it affects hair directly above the forehead.
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 ...
The colored part of the eye is the iris, it controls how much light is let into the eyeball and its color is determined by melanin, just like skin and hair. Darker colors absorb more light, and ...