Researchers have shed light on the reason why the green eye color is noticeably less common compared to other hues. According to the American Academy of Ophthalmology, approximately 2% of the global population has green eyes.
Experts point out that millennia ago, the majority of individuals possessed brown eyes. Subsequently, genetic alterations resulted in a reduced production of melanin within the iris, leading to the emergence of lighter shades.
Current scientific investigations demonstrate that eye color is determined not by a single gene, as previously hypothesized, but by a sophisticated interplay among multiple genetic elements.
A pivotal factor is considered to be the OCA2 gene, which is involved in melanin creation. The HERC2 gene also exerts a substantial influence; certain variations of it diminish the pigment quantity, thereby facilitating the appearance of lighter eyes.
Scientists emphasize that a green tint manifests solely under a specific configuration of genes and a particular level of iris pigmentation. This precise requirement is precisely why this eye color remains infrequent across the globe, as reported by Planet Today.
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