How are people born with eye colors other then blue and brown?

Question

I only learned about brown and blue eyes. What about the colors like hazel and green?

I know that.
Can some explain exactly what happeneds with correct terms?

Answer 1

It all has to do with heredity and dominant and recessive genes. Brown and blue are not the only color eyes in the world! Plenty have hazel, green, and gray. There are also varying shades of blue and brown.

My father has blue eyes, my mother has green. The blue eyes were the dominant genes. 3 of their 4 children have blue eyes, one has green.

Blue and brown are the most common, and commonly used to illustrate the properties of dominant and recessive genes when you learn about it in school.

Answer 2

"In humans three genes involved in eye color are known. They explain typical patterns of inheritance of brown, green, and blue eye colors. However, they don't explain everything. Grey eye color, Hazel eye color, and multiple shades of blue, brown, green, and grey are not explained. The molecular basis of these genes is not known. What proteins they produce and how these proteins produce eye color is not known. Eye color at birth is often blue, and later turns to a darker color. Why eye color can change over time is not known. An additional gene for green is also postulated, and there are reports of blue eyed parents producing brown eyed children (which the three known genes can't easily explain [mutations, modifier genes that supress brown, and additional brown genes are all potential explanations]). "

Answer 3

Hazel:
Hazel eyes are due to a combination of a Rayleigh scattering and a moderate amount of melanin in the iris' anterior border layer. A number of studies using three-point scales have assigned "hazel" to be the medium-color between brown and dark brown. This can sometimes produce a multicolored iris, i.e., an eye that is brown near the pupil and charcoal or amber on the outer part of the iris when it is open to the elements of the sun/shined in the sunlight. Hazel is mostly found in the regions of South and East European nations and places such as the Northern Arabian and Middle Eastern Peninsula but Rarely in Eastern Asia.

There is some difficulty in defining the eye color "hazel" as it is sometimes considered to be synonymous with brown and other times with green. They have been described as light brown or yellowish brown, or as a lighter shade of brown. Hazel eyes have also been described as being equivalent to a dark black or charcoal-colored/light black eyes. In North America, "hazel" is often used to describe eyes that change color, ranging from light brown to green and even blue, depending on what color clothing the person is wearing or what color is predominant in their immediate environment. (Eyes that change only between blue and green are not called "hazel"; the term only describes changeable eye color that includes a brownish shade within its range.) Hazel eyes particularly of the light brown variety are predominately found in the Middle East.

Green:
Green eyes are the product of moderate or low amounts of melanin. Green eye color has often been attributed to lighter hair colors, such as blond and red. However, they can often be found in those with darker hair.

Green eyes are the rarest eye color, even in Europe. Green eyes are commonly found all over the Mid East, including Arabia, Iran and Pakistan, Pashtuns are often called "Hare Ankheian Vaale": those with green eyes (Urdu translation). Deities in both Chinese and Greek mythology had green eyes, possibly because of their rarity.

One of the most famous photographs ever published by National Geographic was a close-up of Sharbat Gula, a Pashtun girl with startling green eyes, taken in western Afghanistan by Steve McCurry in 1984. Details of her irises captured by the photograph were used to confirm her identity after she was relocated in 2002.

Answer 4

You probably need to learn some biology to understand this properly.

People with fair skin and hair tend to come from the northernmost countries of the world. Climate has always determined the colour of our skin,hair and eyes.

Now that the world population has integrated eye colour is still genetic but brown eyes will tend to dominate.

Answer 5

Eye color comes from Polygenic inheritance, meaning the gene trait mixed with enviornment. Each human produces a variable proportion of melanin, or biological pigment that accounts for hair, eye, and skin color. Certain proportions and concentrations of melanin account for different colors.

Answer 6

genetics