can two blue eye parents make a brown eye baby?

Question

two blue make blue,right?or can green and brown come into the family?

Answer 1

No, two blue-eyed parents cannot under normal circumstances have a brown-eyed baby. The gene for blue eye pigment is recessive, and any other color eye is dominant over it. Therefore, if either parent had any genes for a different eye color, it would be expressed. If the parents both have blue eyes, then the only eye color genes they have are for blue eyes, and their child must have blue eyes as well.

A lot of the answerers here are confused; they are saying "yes," and then explaining how two brown-eyed parents can have a blue-eyed child, which is not what you asked. Although it is possible for two people with brown eyes to have a child with blue eyes, it is not possible for two people with blue eyes to have a child with brown eyes.

The reason that two brown-eyed parents can have a blue-eyed baby is that a brown-eyed person could be the carrier of unexpressed genes for blue eyes; if the person has a gene for brown eyes and a gene for blue eyes, then the eyes themselves will be brown, but the blue-eyed gene is still present. If both parents are such individuals, they have a 1 in 4 chance of both passing the blue-eyed gene on to the child, resulting in that child having blue eyes. If the child gets a blue-eyed gene and a brown-eyed gene, he or she will have brown eyes but could eventually have a blue-eyed child due to carrying the blue-eyed gene.

However, there are exceptions to every rule. If one of the blue-eyed parents actually did have the gene for brown eyes, but it was not expressed due to some other flaw with his or her expression of pigmentation, then he or she would have blue eyes, but would be able to pass the gene for brown eyes on to his or her child. As long as the parent did not also pass on the pigmentation defect, then the child could have brown eyes. I do not know of any particular disorder that prevents the expression of genes for brown eyes, but it's within the realm of possibility. There is, in fact, a genetic condition called the Bombay phenotype (or the Hh antigen system) where a person has genes for A, B, or AB blood type, but an antigen defect results in blood that appears to be of type O.

I have found a few sources that mention the fact that two blue-eyed parents can, in fact, have a brown-eyed child, but evidently even geneticists do not know how it actually happens.

Answer 2

Yes they can, there is a higher chance the child will have blue eyes, but if one of the parents has the gene for green or brown eyes then the baby could have either of those eye colors. My boyfriend and I both have blue eyes, and we have a daughter with blue eyes and a daughter with hazel eyes.

Answer 3

blue eyes is a trait by a recessive gene. (brown eye is a dominant gene) and the color of eye is determined by ONLY the dominant gene. Since everyone has 2 genes for eye color, they can be brown-brown, brown-blue (these two create brown eyes) blue-blue (blue eyes if you have these).
So if both parent has brown eyes but their genes is brown-blue, there are chances that the child will get a blue gene form the father and also a blue gene from the mother and will have blue eyes (25% chance). Same goes with blond hair

Answer 4

Generally, two blue eyed parents cannot have a brown-eyed baby; HOWEVER, there are exceptions to every rule. If the dominant brown genes are suppressed for some reason, genetically "brown-eyed" people can look like they have blue eyes. Therefore, when they have children, they can pass on the brown eye gene to them and the children could have brown eyes.

This site explains it:

http://www.earthlife.net/insects/evolve.html

Answer 5

On paper, no, two blue eyed parents *should* make a blue-eyed baby. But in reality, genetics likes to throw us confusing curves and mess with the "science" of probabilities. I know several couples that both have blue eyes, but one or more of their children do not.

Answer 6

Yes a child can come out with brown, green or hazel eyes. It can come from someone in either your side of the family or the mothers.

Answer 7

It's highly unlikely. If you make a Punnett's Square, and map out their genotypes, you will see that they both would have 2 recessive alleles. When you cross those alleles, you see that all the children would also have 2 recessive alleles, so unless there is a mutation, all the kids would have blue eyes.

Answer 8

Yes, in fact ur kid could look more like the grandparents than you. When I was in school a teacher told me that it's all in the genes and genes tend to skip a generation so some babies end up looking more like the grandparents. Weird huh? lol.

Answer 9

Most definatly. If anyone in your or your partners family have brown or green eyes, the baby just might!! Blue is a dominant gene though.

Answer 10

Yes. My parents both have blue eyes. My brother, me and my sister do not have blue eyes and we look like our parents (not adopted).

I have hazel, my brother has hazel and my sister has brown....
my nephew from my bro and his brown-eyed wife has blue eyes.