looking in your big brown eyes h and m ad

All visible light is absorbed by the retina. This same phenomenon is the reason why the pupil appears black. When light passes through a large amount of melanin, most of the visible light is absorbed, and the little that is reflected back appears brown. The quantity and quality of melanin in the cytoplasm determines the observed color of the eye.

Despite the color of the eye, the number of melanocytes does not differ. This provides an explanation why some babies develop their eye color, but skin pigmentation changes constantly throughout life. In the rest of the body, the melanin is secreted from the cells.

Melanocytes in the stroma and anterior layers of the eye hold melanin in their cytoplasms. The traditional view was correct in which an allele that codes for brown is dominant over green or blue, and green takes precedence over blue. Eye color ranges include varying shades of brown, hazel, green, blue, gray, and in rare cases, violet and red. 1 On the basis of the observation of more than two phenotypes, eye color has a more complex pattern of inheritance.

In the most elementary form, the inheritance of eye color is classified as a Mendelian trait. In addition, the evolutionary and population roles of the different expressions are significant. Some individuals may express two phenotypes-one in each eye-or a complete lack of pigmentation, ocular albinism. Furthermore, with all genetic expression, aberration also occurs. Therefore, single-nucleotide polymorphisms in either of these two genes have a large role in the eye color of an individual. An intron in HERC2 contains the promoter region for OCA2, affecting its expression. Although there are about 16 different genes responsible for eye color, it is mostly attributed to two adjacent genes on chromosome 15, hect domain and RCC1-like domain-containing protein 2 (HERC2) and ocular albinism (that is, oculocutaneous albinism II (OCA2)). Eye color phenotypes demonstrate both epistasis and incomplete dominance.

Although eye color is usually modeled as a simple, Mendelian trait, further research and observation has indicated that eye color does not follow the classical paths of inheritance.

Looking in your big brown eyes h and m ad