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Eye color. 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 ...
The iris (brown coloured portion of the eye) controls the size of the pupil by contracting the sphincter pupillae and dilator pupillae muscles. The sphincter pupillae is the opposing muscle of the dilator pupillae. The pupil's diameter, and thus the inner border of the iris, changes size when constricting or dilating.
The Khao Manee cat ( Thai: ขาวมณี, RTGS : Khao Mani, lit. "white jewel"), or Khao Plort ( Thai: ขาวปลอด, lit. "complete white"), also known as the Diamond Eye cat, [ 1] is a rare, natural breed of domestic cat originating in Thailand, which has an ancient ancestry tracing back hundreds of years. They are mentioned in ...
Friendship Is Magic (Generation 4) Andrea Libman (G3) Claire Corlett (G4) Michelle Creber (singing voice, G4; seasons 1-3) 3, 4. Sweetie Belle is a filly unicorn pony with a white-grey body, green eyes and a lavender mane and tail with a light pink streak, and a member of the Core 7 ponies.
The common grackle ( Quiscalus quiscula) is a species of large icterid bird found in large numbers through much of North America. First described in 1758 by Carl Linnaeus, the common grackle has three subspecies. Adult common grackles have a long and dark bill, pale yellow eyes, and a long tail. Adults often have an iridescent appearance on ...
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Russian Blue's green eyes The Russian Blue has bright green eyes, pinkish lavender or mauve paws, two layers of short thick fur, and a blue-grey-black coat. [ 9 ] The color is a bluish-gray that is the dilute expression of the black gene.
By Susana Victoria Perez, Buzz60 If you think you have blue eyes, think again, they are actually tricking you! All eyes are really brown. According to CNN, Dr. Gary Heiting, a licensed optometrist ...