Get Reader’s Digest’s Read Up newsletter for more knowledge, humor, cleaning, travel, tech and fun facts all week long ... blue eyes and hair somewhere on the spectrum of blond to brown ...

Unlike some other inherited traits (like the color of your hair ... shared brown eyes, which is the natural color of melanin.

This gene also contributes to hair and skin colour, but to a much lesser extent. In 2008, Sturm and colleagues mapped different genes associated with blue and brown eyes. "What we're seeing with ...

“It’s believed that’s how blue eyes came about, but it may just be the de-emphasis on the need for all the melanin,” Heiting said. It’s long been believed that if someone has brown eyes ...

Some insects and fish manipulate physics in order to appear blue, but there is no mammal has naturally blue fur or hair ...

Jameela Jamil has had the same distinct hair since, well, forever? I honestly can't recollect ever seeing her with anything other than long dark ... usually deep brown eyes are blue, and not ...

The former supermodel said cutting and coloring her long brown hair was a "pivotal moment" in her career Style + Beauty Assistant, PEOPLE Twiggy’s thin frame, big blue eyes and androgynous ...

In effect, the turned-down switch diluted brown eyes to blue. If the OCA2 gene had been completely shut down, our hair, eyes and skin ... If a group of individuals shares long haplotypes, that ...

Gayle scored a couple of Nashville hits, including “I’ll Get Over You,” before she released the crossover smash “Don’t It Make My Brown Eyes Blue ... could have long hair to the ...

The country-pop legend opens up in this week's issue of PEOPLE about her signature long mane ... her 1977 single "Don't It Make My Brown Eyes Blue," which topped Billboard's country chart and ...