>>157138
Now I want to pull in a new thread and then associate it with blondes (and blue eyes) later:
1901, 1927
In 1901 the ABO blood type was discovered. In 1927 it was associated with personality.
Source: https://en.wikipedia.org/wiki/Blood_type#History
Blood Types and Personality
>We have observed in southeast USA in female outpatients that ABO blood group A correlates with a calm, smooth pleasant demeanor. Based on this hypothesis, ABO group A appears to show tendencies to correlations with increased DBH, increased COMT, and increased MAOA with result of low dopamine and norepinephrine. Based on consensus in catecholamine personality trait research, personality trends in ABO A therefore would be non-submissiveness, non-perfectionism, and non-aggressiveness. These traits seem consistent with the calm, smooth and pleasant demeanor we have observed.
>We have observed that patients with ABO group B are preoccupied and reticent in demeanor. Based on this hypothesis, ABO B appears to have decreased DBH, decreased COMT, and increased MAOA with resultant higher dopamine and moderate norepinephrine. Catecholamine research-supported personality trait trends would thus be submissiveness, perfectionism, and non-aggressiveness and these traits would be congruent with the preoccupied, reticent demeanor we have observed.
>We have observed that patients with ABO group O are firm and self-confident and commanding. According to this hypothesis, ABO O has research showing trends toward high DBH, high COMT, and low MAOA with resultant low dopamine and moderate to high norepinephrine and thus personality trait trends of non-submissiveness, non-perfectionism, and aggressiveness. These traits seem congruent with the firmness, self-confidence and commanding demeanor we have observed.
…
>According to Japanese ABO blood group personality theory, there is consensus in the personality of each ABO blood group: ABO A is described in such terms as quiet, concerned about the feelings of others, and peaceful. ABO B is described as being individualistic, unconventional, and unaware of others’ feelings. ABO O is called a leader, outgoing and strong. ABO AB is noted to be one who tries to fit in but who feels aloof.
Source: “Personality traits of aggression-submissiveness and perfectionism associate with ABO blood groups through catecholamine activities” Donna K. Hobgood, University of Tennessee College of Medicine, Chattanooga, TN 37421, United States (2011)
Blood Group A is non-submissive, Blood Group O is individualistic. To have a non-conflicted functional organised society you might have a preference for submissive Blood Group B or AB.
See also: https://en.wikipedia.org/wiki/Blood_type_personality_theory
Lets now bring the B type blood and the blonde, blue eyes and Aryan together.
Blood
Pic #1: https://commons.wikimedia.org/wiki/File:Map_of_blood_group_b.gif
Shows that the B type blood is mostly in a band between the Indo-Aryan area and north-eastern Russia.
https://en.wikipedia.org/wiki/Indo-Aryan_peoples
And pic#2 & 3 suggests the migration of the Indo-Aryans into Europe (and elsewhere). Along the way their skin adapts to falling UV sunlight by loosing melanin, and blond hair by loosing eumelanin a type of melanin.
Blue Eyes
pic#4: https://commons.wikimedia.org/wiki/File:Light_eye_coloration_map.png
Blue eyes seem to have emerged in northern Europe:
>A Stone Age man who lived about 7,000 years ago and whose buried bones were discovered in 2006 has turned out to be the earliest known person with blue eyes, a physical trait that evolved relatively recently in human history, a study has found.
>A DNA analysis of the man’s tooth has also revealed that although he was more closely related to modern-day Scandinavians that to any other European group, he had the dark-skinned genes of an African, though scientists do not know his precise skin tone.
…
His well-preserved skeleton was one of two discovered in 2006 in a deep cave system called La Braña-Arintero near León in north-west Spain, which is 1,500m above sea level and cold enough to limit the bacterial decay of DNA.
https://www.independent.co.uk/news/science/revealed-first-ol-blue-eyes-is-7000-years-old-and-lived-in-a-cave-9086310.html
White Skin
>Based on 83 human samples from Holocene Europe as analyzed under the 1000 Genomes Project , it is now found that for the majority of the time that humans have lived in Europe, the people had dark skin, and the genes signifying light skin only appear within the past 8,000 years. This recent and relatively quick process of natural selection suggests to researchers that the traits which spread rapidly were advantageous within that environment, according to the American Association for the Advancement of Science (AAAS).
https://www.ancient-origins.net/news-evolution-human-origins/white-skin-developed-europe-only-recently-8000-years-020287