Genetics of eye color what makes blue eyes and brown brown. people have two different colored eyes. also make albino turn red.?

Eye color is a polygenic trait, meaning that it is determined by multiple genes. There are several genes that are involved in eye color, but the most important one is the OCA2 gene. This gene codes for the protein P protein, which is responsible for producing melanin. Melanin is the pigment that gives skin, hair, and eyes their color.

There are two main types of melanin: eumelanin and pheomelanin. Eumelanin is responsible for brown and black colors, while pheomelanin is responsible for red and yellow colors. The amount and type of melanin that is produced is determined by the OCA2 gene.

People with brown eyes have a lot of eumelanin in their irises, while people with blue eyes have very little eumelanin. People with green eyes have a moderate amount of eumelanin, and people with hazel eyes have a mixture of eumelanin and pheomelanin.

Heterochromia is a condition in which a person has two different colored eyes. This can be caused by a genetic mutation, or it can be a result of trauma or disease.

Albinism is a condition in which a person has very little or no melanin. Albinos typically have white hair, skin, and eyes. Their eyes can sometimes appear red because the blood vessels in the iris are visible.