Just had baby, born with green eyes? (married, 8 years old, grandfather)
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Yes, it is fascinating. The article does say that two blue eyed parents having a brown eyed child is uncommon. But yeah, you don't really know what's in that gene pool till you have your own kids!
I keep thinking that there must be a few freaked out students in high school biology every year who come out of the genetics unit convinced that they must have been adopted because of this unusual occurrence. Poor kids!
If a parent has one brown-eye gene and one blue-eye gene, s/he will have brown eyes. Brown is dominant over blue. To have blue eyes, one must have two blue eye genes. In fact, brown is dominant over any other color.
I thought for sure I'd have brown eyed kids and that having light color eyed a long shot. Being half Japanese, I have black hair with brown eyes. My 3 girls (1/4 Japanese and pretty white otherwise) are all dark/dirty blonde with light color eyes. It's actually a head scratcher.
Now that I think of it, nobody (including cousins, second cousins, etc) in my husband's family has brown eyes.
Hazel eyes are a form of heterochromia (i.e., the combination of two colors in the iris), involving green and brown. We refer to my daughter's eyes as hazel, but they are actually a combination of amber and blue and centrally heterochromatic, which means the variation radiates from the pupil. They look green under most conditions, and the amber color probably results from pheomelanin rather than eumelanin, because she is a redhead. Where pigment resides in the layers of the iris can also affect how eye color reads to observers.
Like this? My youngest daughter is 5 months old and was born with dark blue/grey eyes, and now they are what you describe.
This looks pretty identical to her eye color. They appear green in certain lighting conditions.
If a parent has one brown-eye gene and one blue-eye gene, s/he will have brown eyes. Brown is dominant over blue. To have blue eyes, one must have two blue eye genes. In fact, brown is dominant over any other color.
Well it depends on the other gene each parent has. If the parent is heterozygous for blue and green, it can't be assumed that the blue would be passed on to the child. The green could be passed on. As explained in the link, if you do a punnet square and look at the statistics, it comes down to more than just being heterozygous for one color.
My family uniformly has dark eyes with only one relative (great-grandmother) having a different color, gray. What should I expect with our children? I'm expecting dark eyes, but not sure to what extent if we had....say 4 children.
This may or may not matter but I'm 87% west/central African according to DNA testing, 11% northern European with the remainder being some combo of south Asian and Native American. She's 99.8% European.
Brown. There is an infinitesimal chance you could have a light-eyed child due to your g-grandmother's light eyes, but it is vanishingly small. Another possibility for light eyes involves the dominant brown-eyed gene being turned off through a genetic quirk. The possibility for this is also very small, but it can happen, at least according to the article Newenglander linked in an above comment.
Last edited by randomparent; 05-02-2015 at 07:05 AM..
A boss I formerly worked for had one blue and one green eye. Both were brilliant in color. He was a very handsome man, but his eyes made you go "WHAT?"
I now think it would be cool to be like him! I'd love that novelty.
When you have a baby, you get what you get. They are all pretty!
The link someone posted said that if you have one blue eye and one green eye, you have a genetic disease called Waardenburg syndrome. That can apparently cause other problems.
Waardenburg syndrome affects an estimated 1 in 40,000 people. It accounts for 2 to 5 percent of all cases of congenital hearing loss. Types I and II are the most common forms of Waardenburg syndrome, while types III and IV are rare.
Both my babies were born with gray eyes, but both turned brown later. My son's took the better part of a year to turn, but my daughter's were brown by the time she was a month old. You'll just have to watch and see what happens!
Most babies are born with grey or greyish blue eyes. I should say, most Caucasian babies. My son's eyes changed to light green - but it took two years.
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