{"id":171840,"date":"2025-09-23T12:42:02","date_gmt":"2025-09-23T12:42:02","guid":{"rendered":"https:\/\/teknomers.com\/en\/the-blue-eyes-were-on-the-verge-of-vanishing-under-the-roman-empire-now-we-understand-the-reason\/"},"modified":"2025-09-23T12:42:04","modified_gmt":"2025-09-23T12:42:04","slug":"the-blue-eyes-were-on-the-verge-of-vanishing-under-the-roman-empire-now-we-understand-the-reason","status":"publish","type":"post","link":"https:\/\/teknomers.com\/en\/the-blue-eyes-were-on-the-verge-of-vanishing-under-the-roman-empire-now-we-understand-the-reason\/","title":{"rendered":"The blue eyes were on the verge of vanishing under the Roman Empire. Now we understand the reason."},"content":{"rendered":"\n

The Fascinating Journey of Blue Eyes: From Ancestry to Modern Understanding<\/h2>\n

About \u00a035,000 years ago\u00a0, in Buran-Kaya<\/a>, situated north of the mountains of Crimea, the first person with \u00a0blue eyes\u00a0 took their last breath. This marked the beginning of an intricate and layered narrative surrounding blue eyes\u2014a story that intertwines evolution, genetics, and human culture.<\/p>\n

Recent advancements in \u00a0genetic analysis techniques\u00a0 have unveiled fascinating truths about our ocular characteristics. Studies indicate that indeed, Vikings had blue eyes<\/a>, while ancient steppe peoples were characterized by unexpectedly darker eye colors. Furthermore, during the Roman Empire, the prevalence of blue eyes experienced a notable decline.<\/p>\n

Understanding the Genetics of Blue Eyes<\/h2>\n

So, how do we uncover \u00a0the genetic mechanics\u00a0 behind blue eyes? Davide Piffer’s research sheds light on this matter. He utilized \u00a04,133 ancient genomes\u00a0 spanning a timeframe of 44,000 years to decode the emergence of blue eyes and their selection through generations. His exploration allows a glimpse into the genetic ‘trace’ that provides insights into the eyecolor of our ancestors.<\/p>\n

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Why do we have blue eyes?<\/strong> The answer lies primarily within our \u00a0genetics\u00a0. According to Piffer, the genetics of blue eyes focus on two adjacent genes on chromosome 15: \u00a0OCA2\u00a0, which governs melanin production in the iris, and \u00a0Herc2\u00a0, which contains a regulatory component. In individuals with brown eyes, the active \u00a0Herc2\u00a0 gene effectively prompts \u00a0OCA2\u00a0 to produce an abundance of pigment. Conversely, a mutation in \u00a0RS12913832\u00a0 weakens this control, leading to reduced melanin levels and consequently, blue or green eye colors.<\/p>\n

Revealing Insights from Ancient Populations<\/h2>\n

Piffer\u2019s research confirmed that Vikings predominantly possessed blue eyes, while the steppe communities exhibited darker hues than initially anticipated. Surprisingly, he also uncovered a dramatic shift in the \u00a0prevalence of blue eyes\u00a0 throughout Roman history. In ancient Rome, approximately \u00a022.2%\u00a0 of the population had blue eyes, but this number fell to \u00a021.4%\u00a0 in medieval times, plummeting further to a striking \u00a04.2%\u00a0 during the height of the Empire. What factors contributed to this significant change?<\/p>\n

The prevailing theory attributes this decline to shifting demographics in \u00a0Northwestern Europe\u00a0. During the initial phase, although the genetic foundation leaned toward Anatolian roots, there was a notable influence from the \u00a0Yamnaya\u00a0 group. Over time, the influx of Germanic tribes, such as the \u00a0Lombards\u00a0 and \u00a0Ostrogoths\u00a0, altered the genetic mix, leading to an explosion of brown-eyed individuals.<\/p>\n

Additionally, \u00a0Latin features\u00a0 began to gain prominence during Rome\u2019s expansive reign, resulting in a cultural preference for brown eyes. Such genetic and social dynamics have long been a topic of consensus among \u00a0population geneticists\u00a0.<\/p>\n

Challenging Established Views<\/h2>\n

Nonetheless, Lyman Stone, a demographic analyst, critically examined the existing genetic data. He scrutinized the \u00a04,133 ancient samples\u00a0, questioning whether they truly represented the eye colors of Romans. Stone posited that blue eyes likely decreased in urban Rome due to increased immigration, signaling a shift in the city’s genetic demographic. In this context, it is plausible that the proportion of brown-eyed individuals rose from \u00a0200 AD\u00a0 to \u00a0300 AD\u00a0, notwithstanding the consistent genetic composition in places like Bologna.<\/p>\n

This revelation begs the question: Why do we believe that Romans lacked blue eyes? The straightforward answer is that our understanding is hindered by inadequate data. This lack of information significantly shapes our worldview, often more than we are willing to accept.<\/p>\n

Image credits: [Amanda Dalbj\u00f6rn](https:\/\/unsplash.com\/es\/fotos\/enfoque-selectivo-de-la-persona-de-ojos-azules-UbJMy92p8wk) | [Clemens van Lay](https:\/\/unsplash.com\/es\/fotos\/una-estatua-de-una-persona-sosteniendo-un-baston-YT5DU0icZUA)<\/p>\n


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General News – 2<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The Fascinating Journey of Blue Eyes: From Ancestry to Modern Understanding About \u00a035,000 years ago\u00a0, in Buran-Kaya, situated north of the mountains of Crimea, the first person with \u00a0blue eyes\u00a0 took their last breath. This marked the beginning of an intricate and layered narrative surrounding blue eyes\u2014a story that intertwines evolution, genetics, and human culture. […]<\/p>\n","protected":false},"author":1,"featured_media":171841,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36399],"tags":[2493,18078,163,5087,10754,3430,42606,19026],"class_list":["post-171840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-blue","tag-empire","tag-eyes","tag-reason","tag-roman","tag-understand","tag-vanishing","tag-verge"],"_links":{"self":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/171840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/comments?post=171840"}],"version-history":[{"count":0,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/posts\/171840\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media\/171841"}],"wp:attachment":[{"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/media?parent=171840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/categories?post=171840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teknomers.com\/en\/wp-json\/wp\/v2\/tags?post=171840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}