What Is the Rarest Eye Color in Humans and Why?

Discover why green is the rarest human eye color, held by only 2% of the world’s population, explained through melanin levels and light scattering.

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The rarest eye color for humans is green. Only about 2% of the global population has green eyes. This eye color results from a combination of low melanin levels and the scattering of light, known as Rayleigh scattering.

FAQs & Answers

  1. Why are green eyes so rare in humans? Green eyes are rare because they result from low melanin levels combined with Rayleigh scattering of light, a unique genetic trait found in only about 2% of the global population.
  2. What causes different eye colors in humans? Eye color is determined by the amount and type of melanin pigment in the iris and how light scatters, with genetics influencing these factors.
  3. Are green eyes more common in certain populations? Yes, green eyes are more frequently found in people of Northern and Central European descent, but remain rare worldwide.

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