It has been my understanding since high school that, barring mutation, parents with blue, green or hazel eyes cannot produce a child with brown ones let alone very dark brown ones. Barring mutation and hopefully illegitimacy does anybody know how Prince George could have wound up with very dark brown eyes when his parents, William and Kate, are both fair eyed?


                                               

 

 

 

 

 

 

 

 

 

 

 

 

 

                                                          

 

 

 

 

Tags: Eye Color, Jubinsky, Prince George, Royal Family

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Here's what I found....

Catherine's eyes are hazel and the color changes with the lighting. She doesn't wear contact lenses.
Genetics plays a role in eye color. The Middletons have dark eye color in their genetic mix. On William's side, dark eyes are still in the genetic mix. Gene make-up for George just gives him brown eyes.

My understanding since high school is as follows:

Genes of the eye color type express themselves according to which are dominant and which are recessive. (Brown is supposed to be dominant to anything lighter.) George received a gene for brown eyes or else he wouldn't have them. That means, barring illegitimacy, he got the gene from either William or Kate. However, if he got it from William then William would have brown eyes too because the brown eyed gene (that would have been in him to give to George) would have dominated in determining his own eye color. Likewise, if George got his brown eyed gene from Kate then she would have brown eyes too because the brown eyed gene (that would have been in her to give to George) would have dominated in determining her own eye color. Accordingly, because neither William nor Kate has brown eyes, neither had a brown eyed gene to give George from which he got dark brown eyes. Therefore, barring mutation, George must have gotten his brown eyed gene from somebody else.

 

I have very dark brown eyes, my parents had dark eyes, grandparents had dark eyes, with the exception of one grandfather that I know of who had electric blue eyes.

My husband has hazel eyes, his father had hazel eyes, & his mother had blue eyes.

I have 3 kids, eldest son has blue gray eyes, daughter has the dark brown, & youngest son has brilliant blue.

Daughter is married to a bright blue-eyed fellow, & all 5 kids have dirty hazel colored eyes.

So...Where did those brown-eye genes come from to begin with?  That's the sixty-four dollar question implied but not stated by this thread.

I have this suspicion that somewhere in the deep dark past, someone from southern climes contributed to the gene pool, apparently on both sides.  But wait!  Go back far enough and we can all trace our ancestry to "the Dark Continent," can't we?

Not to fear, though, prince and duchess - someone has developed a laser treatment that burns away that awful brown pigment layer on the surface of the iris to reveal the startling electric blue layer in the iris underneath the brown.  That's why, here in Costa Rica, you're suddenly seeing all these people showing up with these stunning electric-blue eyes - folks that just months ago had the usual brown eyes...

John, if I understand your question, its something like,

Brown eye color dominates blue eye color.

If Kate has blue eyes, then, she can not have the brown eye gene.

If William has blue eyes, then, he can not have the brown eye gene.

George, having brown eyes, got them from someone other than Kate or William.

Therefore, there was either a new mutation, or one (or both) of them is not his parent.

Is that right?

Eye color sounds pretty complex.  "

In humans three genes involved in eye color are known. They explain typical patterns of inheritance of brown, green, and blue eye colors. However, they don't explain everything. Grey eye color, Hazel eye color, and multiple shades of blue, brown, green, and grey are not explained. The molecular basis of these genes is not known. What proteins they produce and how these proteins produce eye color is not known. Eye color at birth is often blue, and later turns to a darker color. Why eye color can change over time is not known. An additional gene for green is also postulated, and there are reports of blue eyed parents producing brown eyed children (which the three known genes can't easily explain [mutations, modifier genes that supress brown, and additional brown genes are all potential explanations]).

Here is another explanation.   The article does state it is possible for 2 blue-eyed parents to have a brown eyed child. 

Maybe the British Royalty has some selective breeding going on, or was that in a Dan Brown novel I read?

Sentient Biped - Per your above post: 

 

Brown eye color dominates blue eye color.

If Kate has blue eyes, then, she can not have the brown eye gene.

If William has blue eyes, then, he can not have the brown eye gene.

George, having brown eyes, got them from someone other than Kate or William.

 

(Because neither William nor Kate had a brown eyed gene to give to George unless one of their eye color genes mutated to brown).

Therefore, there was either a new mutation, or one (or both) of them is not his parent.

Is that right?

 

Yes, that has been my understanding since my high school biology class. As it was explained to me eye color involved only two genes (a dominant one and a recessive one) whereby the dominant one dictated the eye color and the recessive one remained unexpressed in the individual (but could be passed on to a child).

 

Thanks for the additional information. (It seems that genetics can be a little more complicated than is conveyed in high school biology.)

 

However, my experiences in life suggest that two fair eyed parents very rarely produce a child with very dark brown eyes. Although (as you have documented) such a thing is possible even without mutation the rarity of it reasonably introduces concerns even independently from illegitimacy and mutation. This is especially true in that it occurred in a royal family.

 

That is, thinking out of the box a little, is it impossible that a stranger could have figured a way to switch in early life the real prince with an unrelated baby? The motive of course would be to hold the prince for ransom later or simply to increase the thief’s sense of self-importance.

 

Given the rarity of two fair eyed parents producing a child with very dark brown eyes, if I were William or Kate I would secretly have some DNA testing done to determine whether they were the parents. If it turned out that Kate was not the mother then that would prove there had been a baby switch.  

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Doesn't the family history count here? It's already been said that Kate has dark -eyed family, & so does William. That baby is theirs.

It is less likely, by a large percentage, but if the parent with brown eyes, is a recessive carrier, then that trait can be passed on along with the one from the other parent, and make a child with the repressive color, or other trait. No mutation needed.

My mother has brown eyes, my father was hazel, mine are brown, my sister is hazel.

It is also worth noting that many children are born with blue eyes, that will naturally change as they get older.

doh, dyslexia strikes again, read that backwards....

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