Hello, I'm an expert in genetics and human physical traits. When it comes to the occurrence of specific combinations of hair and eye color, it's important to consider the genetic factors that influence these traits.

Blonde hair and blue eyes are both recessive traits, meaning that an individual must inherit a specific version of the gene from both parents to express these characteristics. The frequency of these traits can vary significantly across different populations and geographical regions.

In some Northern European populations, such as those from Scandinavia, the combination of blonde hair and blue eyes is relatively more common due to a higher frequency of the genes responsible for these traits. However, globally, this combination is less common and can be considered rare, especially in populations where darker hair and eye colors are predominant.

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We've all heard of the blonde-hair-and-blue-eyed combo, as well as the brown hair and hazel eyes. ... The traits for both red hair and blue eyes are recessive, so the chances of these two coming together are very rare. Only 1 to 2 percent of the population has red hair and only 17 percent have blue eyes.read more >>