Why do most blonde people have blue eyes?
What decides the color of our eyes? It’s a genetic trait, of course, just like our hair and skin. In fact, it’s the same chemical which affects the color of all three: melanin. The more melanin-producing cells (or melanocytes) you have, the darker your hair, skin and eyes are likely to be. But beyond that, the science of eye colour is rather complicated. Even now, we don’t know exactly how many genes affect the color of our eyes.Dominant BrownBrown eyes are by far the most common worldwide, and in many areas of the world, such as East Asia and Sub-Saharan Africa, it’s rare to find any other color. That’s because brown is a “dominant” gene, and so any child of both brown and non-brown eyed parents is much more likely (though not certain!) to have brown eyes too.There is no confirmed advantage of having brown eyes but research has indicated that they may be slightly better at absorbing bright light and blocking UV rays.Blue Eyes, Blue SkyBlue eyes do not actually contain any blue pigment, rather, they appear blue for the same reason as the sky: light entering the eye is scattered through the iris, and perceived as blue because blue is the shortest wavelength of visible light, and therefore, more of it is reflected back out. So technically, the eyes themselves are not blue at all! The same applies for green, amber, hazel, and every shade in between – these are all caused by varying degrees of melanin, both in the back of the eye of the iris and the front of it, as well the structure of the collagen: finer collagen reflects more light, causing eyes to appear bluer, while coarser collagen reflects less, giving us green eyes. In people with albinism, there is no melanin whatsoever in the eye, and as such they appear red: not because they’re reflecting red light, but because we can see the blood in the eyes! This total lack of melanin also makes albino eyes highly susceptible to UV, making sunglasses a necessity outdoors.As the melanin affects the color of all three (hair, Skin and Eyes) there is a correlation among them which tends to give blue eyes to blond people.For more info on eye color visit: Optical Center.
Why do many Scandinavians have blonde hair and blue eyes? What percentage of the population are they?
Yes, due to the fact that in northern climates, the need for Vitamin D is better acquired by people who have lighter pigmentation. So over time, humans who were lighter-pigmented survived longer than those who were darker in the north. This also means their genes prevailed over dark ones, this is why many ethnic Scandinavians are blonde-haired or light-pigmented. Though they are all not uniformly blonde there are variations within various parts. Scandinavia as a whole is the most fairest-haired regions of Europe and the world .% of fair hairNorway = (usually) 75%+, especially in Central Norway, though some regions to southwest and the very north have a range of 65-74%. This is the blondest Scandinavian country.Sweden = (usually) 65-74% in most the country with exceptions in the very north where many might be Saamis or have Saami admixtures it drops to below 60% and the very southeastern part bordering the Gulf of Bothnia where it rises to again the 75%+ range. Sweden is not blonder than Norway.Denmark = (usually) 65-74% fair hair range, only very small districts in the northeastern coastal region go to the 75%+ range! Denmark is somewhat more similar to Sweden than Norway.
How come some hispanic guys have blonde hair and blue eyes?
All hispanics are a combination of "White Spanish" people, African people and Indians that lived in their country. That doesnt mean that they have an equal portion of each. Any hispanic could be 80% spanish, 10% african and 10% indian.
Why do german people have blond hair and blue eyes?
Eye and hair color are genetically inherited. Today it is believed that blue eyes are a result of a mutation some thousand years ago and all people with blue eyes may be descendants of one individual. See http://www.livescience.com/9578-common-a... I guess this mutation occurred somewhere in central or northern Europe and stayed there. The same principles may apply to blond hair. The genetic mutation took place about 11000 years ago. http://en.wikipedia.org/wiki/Blond People did not travel too much before the 20th century, usually they found their husband rsp. wife within 10 km of their place of birth.
If both parents have blonde hair and blue eyes, will the baby come out with blonde hair and blue eyes as well?
I suppose. Genetics is tricky and doesn't like to play by the rules.
What did Hitler call people that had blonde hair and blue eyes?
Probably you refer to "Aryan". But in fact not all members of the Aryan race have blonde hair and blue eyes. For example, inhabitants of Persia (Iran) also are Aryans. The members of ancient Germanic tribes are said to have been predominantly fair-haired or red-haired, but we don't really know.
I am mainly Italian but have blonde hair and blue eyes?
Bear in mind that across the centuries Naples (and indeed the whole Italy) has been dominated by people coming from Norway, Denmark, Sweden, France and Germany (that'is, among others, Normans, Suebi, Anjou, Capetians and the house of Hohenstaufen). As a result of such dominations and despite the stereotypes, the genetic pattern of southern italians still has features that are typical of people from north Europe such as blue eyes and blond hair that, together with black hair, eyes and dark complexion resulting from the arabic domination, are quite common in southern italy, especially in the areas of Naples and Sicily.