What causes blue eyes?

Blue eyes are the result of low concentrations of brown melanin, not blue pigmentation. Less melanin allows more light to reflect back to wavelengths on the blue color spectrum, which in turn make eyes appear blue. The reason why eyes are blue is the same reason the sky is blue.

Will blue eyes become extinct?

This mutation is rare so you need to inherit the gene from both parents. If both your parents have blue eyes, you will too. The blue eye gene is a recessive gene. Blue eyes will not go extinct, but there will never be as many blue eyed people as brown.

Why are blue eyes attractive?

It doesn’t confer any evolutionary advantage … except that it gets him more mates.” Blue eyes reflect light more easily than brown, giving then the shine which perhaps makes them more attractive.

What percentage of Americans have blue eyes?

However, according to the American Academy of Ophthalmology , 32 percent of Americans have blue or grey eyes; 15 percent have blue, grey or green eyes with brown or yellow flecks; 12 percent have green or light brown eyes with minimal flecks; 16 percent have brown eyes with dark specks; and 25 percent have uniformly brown eyes.

Who are some famous people with blue eyes?

Frank Sinatra, a singer in the 1940s and 50s was known as Ol’ Blue Eyes due to his piercing blue eyes. Marilyn Monroe, an actress from the same time, was also known for her beautiful blues. Cameron Diaz, famous for her roles in The Mask and Being John Malkovich , also has blue eyes.

Why do some people have freckles in their eyes?

The eye possesses a membrane full of pigment cells called the choroid. While the reason is not clear, the pigment cells can clump together abnormally, resulting in an eye freckle. Rarely, eye freckles are present at birth. Usually, they develop at the same time as skin freckles.

What percentage of the world has blue eyes?

Blue eyes are uncommon, with about 8-10\% of the world having them. Most babies are born with blue eyes but they often change within the first three years of life. Originally, all humans had brown eyes. People with light-colored eyes are often more sensitive to light.