Where did blondes and blue eyes come from?

Perhaps the most plausible theory is that blonde hair and blue eyes arose because of a mechanism called sex selection. This is where males and females choose as their mates those who have one unusual physical characteristic, not necessarily associated with “fitness” per se but simply something unusual.

Why are there so many blondes in Australia?

Also, some aboriginal Australians are born with blonde hair, due to a gene mutation that is also seen in some people from Vanuatu and the Solomon Islands. It is not the same gene responsible for blonde hair in Europeans, but both reasons for blonde-haired children often do not last into adulthood.

Why do some people have blue eyes but not others?

Furthermore, Waardenburg syndrome also causes very pale blue eyes in the first place, meaning that some of the people with blue eyes might be blue-eyed not because of their genetic predisposition but due to this particular syndrome. Black people can also have blue eyes

Are blue eyes more sensitive to sunlight?

People with blue eyes are melanin deficient. On average, most people with blue eyes are sensitive to UV rays, having real difficulties handling sunny days. Genetically speaking, blue-eyed people have less melanin than people with darker colored eyes, which also means that blue eyes are more sensitive to light.

Why do Sicilians have blue eyes and blonde hair?

More, some Sicilian people (just in the South of Italy) are blonde haired with blue eyes due to Normans, that leaded that region in the 12th-13th centuries.

Why do people with blue eyes wear really dark sunglasses?

People with blue eyes are melanin deficient. Genetically speaking, blue-eyed people have less melanin than people with darker colored eyes, which also means that blue eyes are more sensitive to light. It also appears that people with blue eyes like wearing really dark sunglasses for the same reason.