Most likely, hazel eyes simply have more melanin than green eyes but less than brown eyes.
There are lots of ways to get this level of melanin genetically.
It may be that hazel eyes are the result of genes different from gey and bey2.
If this were true, the scheme for eye color would have to be changed.
Are hazel eyes a genetic mutation?
Researchers have implicated the OCA2 gene in several eye colors. The gene is involved in the production of melanin, a pigment that gives hair and skin their hues. It also codes for brown eyes and can lead to green or hazel eyes when mutated. It wasn’t on the OCA gene but rather on a nearby gene called HERC2.
What are hazel eyes a mix of?
Hazel eyes are due to a combination of Rayleigh scattering and a moderate amount of melanin in the iris’ anterior border layer. Hazel eyes often appear to shift in color from a brown to a green. Although hazel mostly consists of brown and green, the dominant color in the eye can either be brown/gold or green.
How common are hazel eyes?
That’s because hazel eyes are unique, with only a smattering of people around the globe having them. When you consider that 55% of the world’s population has brown eyes, you quickly see that having hazel colored eyes is rare indeed.
Are hazel eyes attractive?
Hazel is the combination of blue and gold or brown and green. This color has lighter shade than standard brown. If you have hazel eyes, don’t be afraid as your eyes are semi – rare so they make you more attractive.