* Hair color varies greatly across the world. Blond hair is more common in certain regions (like Northern Europe) than others.
* Defining "blond" is subjective. What one person considers blond another might call light brown or strawberry blonde.
* Hair color changes over time. People's hair can lighten or darken with age, and some people dye their hair.
Instead of a specific percentage, here's what we can say:
* Blond hair is a recessive trait. This means that both parents must carry the gene for blond hair for their child to have blond hair.
* It's more common in certain populations. For example, blond hair is most prevalent in Northern and Eastern Europe.
If you're interested in learning more about hair color genetics, I recommend doing a search for "hair color genetics."