Uploaded August 2025 | Updated September 2026, 1 week ago
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Spanish DNA & The Evolution of Hazel Eyes…
Chapters:
0:00 Intro
0:16 What Causes Hazel Eyes?
1:20 Spain's Autosomal DNA & Genetic History
5:26 Why Spain & Hazel Eyes?
7:18 Spanish DNA Haplogroups
A 2009 study found that 55.2% of Spanish people had hazel-green eyes, much higher than the global average of around 5%. So what is it about Spanish DNA, and the genetic history of Spain in general, that makes hazel eyes such a common feature there.
Now hazel eyes are the joint 3rd most common eye color in the world, along with amber.
Sources:
Olalde, I., Allentoft, M., Sánchez-Quinto, F. et al. Derived immune and ancestral pigmentation alleles in a 7,000-year-old Mesolithic European. Nature 507, 225–228 (2014). doi.org/10.1038/nature12960
Díaz YM, Saornil MA, Almaraz A, Muñoz-Moreno MF, García C, Sanz R. Iris Color: Validation of a new Classification and Distribution in a Spanish Population-Based Sample. European Journal of Ophthalmology. 2018;19(4):686-689. doi:10.1177/112067210901900427
Brancato, D.; Coniglio, E.; Bruno, F.; Agostini, V.; Saccone, S.; Federico, C. Forensic DNA Phenotyping: Genes and Genetic Variants for Eye Color Prediction. Genes 2023, 14, 1604. doi.org/10.3390/genes14081604
What Causes Hazel Eyes?
What Color Are Hazel Eyes? | Warby Parker
Mt DNA U5 - eupedia.com/europe/Haplogroup_U5_mtDNA.shtml
Mt DNA U6 - eupedia.com/europe/Haplogroup_U6_mtDNA.shtml
Díaz YM, Saornil MA, Almaraz A, Muñoz-Moreno MF, García C, Sanz R. Iris Color: Validation of a new Classification and Distribution in a Spanish Population-Based Sample. European Journal of Ophthalmology. 2018;19(4):686-689. doi:10.1177/112067210901900427
Iñigo Olalde et al. The genomic history of the Iberian Peninsula over the past 8000 years. Science 363, 1230-1234(2019). DOI:10.1126/science.aav4040
Haplogroup R1b (Y-DNA) - Eupedia
How Rare Are Hazel Eyes? 34 Facts and Superstitions about the Hazel Eye Color | by ZephyrSpark | Medium
The World's Population By Eye Color - WorldAtlas
European Hunter-Gatherers Had Dark Skin, Blue Eyes | Sci.News
FamilyTreeDNA Discover - Y-DNA Haplogroup R-DF27
Blue Eyes | Liverpool John Moores University
Faith Erin Cain, Kyoko Yamaguchi Effect of iris pigmentation of blue and brown eyed individuals with European ancestry on ability to see in low light conditions after a short-term dark adaption period | bioRxiv
Genetic origins of the Iberian people - Eupedia
Creative Commons Imagery:
Laurinemily at English Wikipedia File:Hazel-green eye 2.jpg - Wikimedia Commons Creative Commons Attribution-Share Alike 2.5 Generic license. Deed - Attribution-ShareAlike 2.5 Generic - Creative Commons
Wojciech Pędzich, Robert Molyneaux File:Yamnaya phenotype, Reconstruction, male, grave Novooleksiivka; Ukraine.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Maulucioni File:Haplogrupo R1b (ADN-Y).png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Matteo De Stefano/MUSE File:Homo sapiens - Neolithic - reconstruction - MUSE.jpg - Wikimedia Commons Creative Commons Attribution-Share Alike 3.0 Unported license. Deed - Attribution-ShareAlike 3.0 Unported - Creative Commons
The Ogre File:Ethnographic Iberia 200 BCE.PNG - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International Deed - Attribution-ShareAlike 4.0 International - Creative Commons
HansenBCN File:Conquista Hispania.svg - Wikimedia Commons Creative Commons Attribution-Share Alike 3.0 Unported license. Deed - Attribution-ShareAlike 3.0 Unported - Creative Commons
Howard Lifshitz from Buffalo Grove, ILUSA File:10488 Cordoba 11 Jewish Quarter Maimonides (11967548236).jpg - Wikimedia Commons Creative Commons Attribution 2.0 Generic license. Deed - Attribution 2.0 Generic - Creative Commons
Maulucioni File:R-DF27.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
שמואל יצחק יעקב File:E1b1b.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Iraniangen.blogfa File:J2-Y-DNA-Haplogroup-Map-J2-M172-Map-J2-Haplogrubu-Haritasi-v3.png - Wikipedia Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
#spain #hazeleyes #ancestry
Join This Channel on YouTube to Get Access to Perks: youtube.com/channel/UCCS3M_uNHH2iOJkpGhkO2SA/join
Subscribe to Celtic History Decoded - youtube.com/channel/UCCS3M_uNHH2iOJkpGhkO2SA?sub_confirmation=1
Spanish DNA & The Evolution of Hazel Eyes…
Chapters:
0:00 Intro
0:16 What Causes Hazel Eyes?
1:20 Spain's Autosomal DNA & Genetic History
5:26 Why Spain & Hazel Eyes?
7:18 Spanish DNA Haplogroups
A 2009 study found that 55.2% of Spanish people had hazel-green eyes, much higher than the global average of around 5%. So what is it about Spanish DNA, and the genetic history of Spain in general, that makes hazel eyes such a common feature there.
Now hazel eyes are the joint 3rd most common eye color in the world, along with amber.
Sources:
Olalde, I., Allentoft, M., Sánchez-Quinto, F. et al. Derived immune and ancestral pigmentation alleles in a 7,000-year-old Mesolithic European. Nature 507, 225–228 (2014). doi.org/10.1038/nature12960
Díaz YM, Saornil MA, Almaraz A, Muñoz-Moreno MF, García C, Sanz R. Iris Color: Validation of a new Classification and Distribution in a Spanish Population-Based Sample. European Journal of Ophthalmology. 2018;19(4):686-689. doi:10.1177/112067210901900427
Brancato, D.; Coniglio, E.; Bruno, F.; Agostini, V.; Saccone, S.; Federico, C. Forensic DNA Phenotyping: Genes and Genetic Variants for Eye Color Prediction. Genes 2023, 14, 1604. doi.org/10.3390/genes14081604
What Causes Hazel Eyes?
What Color Are Hazel Eyes? | Warby Parker
Mt DNA U5 - eupedia.com/europe/Haplogroup_U5_mtDNA.shtml
Mt DNA U6 - eupedia.com/europe/Haplogroup_U6_mtDNA.shtml
Díaz YM, Saornil MA, Almaraz A, Muñoz-Moreno MF, García C, Sanz R. Iris Color: Validation of a new Classification and Distribution in a Spanish Population-Based Sample. European Journal of Ophthalmology. 2018;19(4):686-689. doi:10.1177/112067210901900427
Iñigo Olalde et al. The genomic history of the Iberian Peninsula over the past 8000 years. Science 363, 1230-1234(2019). DOI:10.1126/science.aav4040
Haplogroup R1b (Y-DNA) - Eupedia
How Rare Are Hazel Eyes? 34 Facts and Superstitions about the Hazel Eye Color | by ZephyrSpark | Medium
The World's Population By Eye Color - WorldAtlas
European Hunter-Gatherers Had Dark Skin, Blue Eyes | Sci.News
FamilyTreeDNA Discover - Y-DNA Haplogroup R-DF27
Blue Eyes | Liverpool John Moores University
Faith Erin Cain, Kyoko Yamaguchi Effect of iris pigmentation of blue and brown eyed individuals with European ancestry on ability to see in low light conditions after a short-term dark adaption period | bioRxiv
Genetic origins of the Iberian people - Eupedia
Creative Commons Imagery:
Laurinemily at English Wikipedia File:Hazel-green eye 2.jpg - Wikimedia Commons Creative Commons Attribution-Share Alike 2.5 Generic license. Deed - Attribution-ShareAlike 2.5 Generic - Creative Commons
Wojciech Pędzich, Robert Molyneaux File:Yamnaya phenotype, Reconstruction, male, grave Novooleksiivka; Ukraine.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Maulucioni File:Haplogrupo R1b (ADN-Y).png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Matteo De Stefano/MUSE File:Homo sapiens - Neolithic - reconstruction - MUSE.jpg - Wikimedia Commons Creative Commons Attribution-Share Alike 3.0 Unported license. Deed - Attribution-ShareAlike 3.0 Unported - Creative Commons
The Ogre File:Ethnographic Iberia 200 BCE.PNG - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International Deed - Attribution-ShareAlike 4.0 International - Creative Commons
HansenBCN File:Conquista Hispania.svg - Wikimedia Commons Creative Commons Attribution-Share Alike 3.0 Unported license. Deed - Attribution-ShareAlike 3.0 Unported - Creative Commons
Howard Lifshitz from Buffalo Grove, ILUSA File:10488 Cordoba 11 Jewish Quarter Maimonides (11967548236).jpg - Wikimedia Commons Creative Commons Attribution 2.0 Generic license. Deed - Attribution 2.0 Generic - Creative Commons
Maulucioni File:R-DF27.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
שמואל יצחק יעקב File:E1b1b.png - Wikimedia Commons Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
Iraniangen.blogfa File:J2-Y-DNA-Haplogroup-Map-J2-M172-Map-J2-Haplogrubu-Haritasi-v3.png - Wikipedia Creative Commons Attribution-Share Alike 4.0 International license. Deed - Attribution-ShareAlike 4.0 International - Creative Commons
#spain #hazeleyes #ancestry
