About blue eyes?

Question

Hello. I have brown eyes, but my mother has blue eyes.
Does that mean i have a blue eye gene?

Answer 1

Old school rationale says yes.

Blue eye genes are recessive, meaning you must have two of them (one from mom, one from dad) in order to develop blue eyes.

So, your mom must have 2 blue eye genes. She gave you one and your dad gave you a brown gene.

The brown is dominant, so you get brown eyes, even though mom gave you a blue.

Here's the rub: There's a slight possibility of genetic mutation or other forms of recombination that could mess up the traditional answer.
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Answer 2

Actually it is not as simple as some have mentioned.

To summarize, the inheritance of eye and hair color is complex and involves multiple genes.

Two blue eyed adults can have a brown eyed child!

Most of us learned the model for determining eye color that G.C. Davenport and C.B. Davenport devised in 1907. The Davenport model wrongly says brown eye color is always dominant over blue eye color, which means that two blue-eyed parents always have blue-eyed kids. We know better now.

"Although not common, two blue-eyed parents can produce children with brown eyes," says Richard A. Sturm, a Principal Research Fellow at the Institute for Molecular Bioscience at the University of Queensland in Brisbane, Australia.

Eye color is a complex trait that depends on the state of several interacting genes. The gene that usually decides the issue (blue eyes or brown eyes) is the OCA2 gene on chromosome 15. But it comes in different strengths. A person with a weak form of the OCA2 gene will have blue eyes. Likewise a person with a strong form will have brown eyes.

The plot thickens, though, because an individual also has other eye-color genes that each has a say in the final eye-color outcome. For example, if one of these lesser genes is strong, it can make the weak form (blue) of OCA2 work much more effectively — almost like the strong form (brown). Then the eye color may be a light brown or muddy grey. In fact, the resulting color can be any shade of brown, hazel/green, or blue depending on the strengths of the interactions.

Source: USA TODAY
http://72.14.253.104/search?q=cache:A_BQw1nwd6IJ:www.usatoday.com/tech/columnist/aprilholladay/2004-10-14-wonderquest_x.htm+blue+eye+gene&hl=en&ct=clnk&cd=9&gl=us

Answer 3

Yes, the gene for blue eyes (like the gene for blond hair) is recessive. If you have children, the odds they will have blue eyes will depend on the genetic traits of whomever your mate is. If that person is blue-eyed, the odds (I think, it's been a long time since my last genetics class) are 50/50. If that person also has brown eyes, but has a blue eyed parent, I think the odd the child will have blue eyes to be 1 in 4. I believe each generation your mate is removed from a blue eyed ancestor halves the odds. If your mate doesn't have any blue eyed ancestors your children will have brown eyes, but will have the gene for blue eyes, so you could end up with grand kids (or great grands) with blue eyes.

Answer 4

Yes, you have 1 blue and 1 brown. Brown is dominant (strong). Blue is recessive (weak). You need 2 blue genes to have blue eyes.

Answer 5

Brown eye genes are dominant over blue eye genes so you have Bb eye-color genes (B = brown, b = blue). Your mother is bb.

Answer 6

It's more likely you have a recessive blue gene but you could also be completely free of that gene.
let's just say you dad is BB and your mom is bb
B - Brown b - blue

B b
B BB Bb
b Bb bb

Yeah this is just really basic