Medically the evaluation by Cynthia Taylor Chavoustie, MPAS, PA-C — written by Kristeen Cherney and also Stephanie Watson — to update on June 24, 2020

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Red hair and green eyes is a mix that’s thought about rare. The opportunities you or your kid will have it are based on whether your immediate household members had red hair or green eyes, despite it can skip generations.

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Having red hair or green eyes (or both) every comes down to her genes. Your genetic makeup is based upon a combination of markers her parents have passed to you.

While having red hair and also green eye isn’t common, it’s also not impossible, especially if yes sir a background of the mix on both sides of your family.

Red hair and green eyes with each other is a particularly rare occurrence. Both traits are the an outcome of recessive genes, just as blue eye or O blood kind is.

Being recessive or leading has nothing to carry out with even if it is or no a characteristics is common. Still, the combination of red hair and green eyes often tends to be uncommon in today’s population.

While the odds of having actually red hair and green eyes relies on a range of factors, it’s interesting to look in ~ the genes behind this combination. Every person’s DNA consists of 20,000 genes. Just a few of these genes dictate hair color and eye color.

The hair, skin, and eye colors you born with are all managed by your genes. Her parents passed this genes down to you, just as their parents passed down their hereditary makeup come them.

When it pertains to hair and also eye color, part genes are an ext dominant than others. Yet leading doesn’t have to mean an ext common.

What determines your hair, eye, and skin color is a pigment called melanin. Genes administer the instructions for producing melanin. Your gene determine just how much the this pigment you have, and also therefore, what shade hair and eyes girlfriend have.

The MCR1 gene dictates even if it is you have red hair, and it’s recessive. That method you’d have to inherit copies from both parental to have this shade combination.

Genes also have variants, well-known as alleles. At the very least three various genes regulate eye color, and also there have the right to be much more than 2 alleles for each gene.

For example, the MCR1 gene come in two variants: non-red and also red. The non-red version is dominant. Gey, which is one of the gene that identify eye color, comes in two forms: Green and blue. Blue is the dominant allele.

But the doesn’t tell the entirety story.

Also an important to how common a color mix is in ~ a given population is i beg your pardon alleles are circulating. For example, alleles that the gene OCA2 identify whether someone has brown or not-brown eyes.

In populaces where more people have the not-brown OCA2 allele — like in Scandinavia — the allele for light eyes is more common, even though it’s recessive. Light-eyed human being pass their genes to your children, that pass lock to your children, and that eye color perpetuates.

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Red hair and green eye gene are simply not as common in populations as various other hair and also eye colors.

One study found that the red hair-green eyes genetic combination is among the rarest, at -0.14 correlation. Having red hair and blue eyes is even rarer.