June 19, 2024

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Study: All descendants of one blue-eyed man – a “recipe” for blue eyes

Study: All descendants of one blue-eyed man – a “recipe” for blue eyes

A study showed that people with blue eyes are descendants of one person!

So, according to science, the genetic mutation came from a single human who lived about 6,000 to 10,000 years ago.

The “recipe” for blue eyes with the main ingredient HERC2

For years, teams of researchers have worked to uncover the truth behind this development, examining the OCA2 gene that determines the level of brown pigment in the human eye.

But it turns out that the genetic mutation that causes people to develop blue eyes actually comes from a completely different gene, HERC2. In other words, nature completely inactivates OCA2 thus turning brown into blue.

How do we know that people with blue eyes are descendants of humans?

How do we know that all humans are related to a common ancestor? The reason is that people with blue eyes have the exact same mutation.

According to the researchers who signed the study in the journal Human Genetics, people with blue eyes today, unlike those with brown or green eyes, show very little difference in the amount of melanin in the iris. In other words, blue-eyed people are very similar to each other in terms of melanin.

Study author Professor Hans Eyberg tells Science Daily:

“People with green eyes can be explained by the fact that they have a low amount of melanin in the iris, which is very different from people with blue eyes. From this we can conclude that all people with blue eyes are related to the same ancestor. They all inherited the same switch in the same “The exact place is in their DNA.”

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