Can 2 blue eyed people have a brown eyed child?

Question

Can 2 blue eyed people have a brown eyed child?

Answer 1

No. It's someone elses child.

Answer 2

Nothing to it. It almost all cases the gene for brown eyes is dominant and that for blue eyes recessive, but the important word here is 'almost'. So, in one of those uncommon cases where the allele for blue eyes (B) is dominant and that for brown eyes (b) is recessive, two blue eyed parents with heterozygous alleles, ie : Bb and Bb, will both have blue eyes. Mathematically speaking their four offspring will be : BB (Homozygous dominant, blue eyes) Bb and Bb (Heterozygous, blue eyes) and bb (Homozygous recessive, brown eyes).  Of course there is nothing to prevent them from having ten brown eyed children in a row, all carrying the heterozygous recessive (bb) gene. That'll give the neighbours something to talk about.

This is true for all cases where both parents carry the dominant and recessive genes for any characteristic.

Answer 3

Its unlikely but not impossible!

It is more likely if one of the childs grandparents have brown eyes

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Answer 4

Yes.

50 years ago, and in some back country high school biology textbooks, we thought that blue eyes worked on a simple mendelian dominant recessive gene system. Some people still learn mendelian genetics by doing Bb punnet squares.....very sad.

We know today that's just not so-Eye color is handled by at least 3 genes, two of which are responsible for blue. (This is called a polygenic trait-poly (many) genes)

If one parent has blue eyes because of having two copies of one of the blue eyed genes, and the other parent has blue eyes because having two copies of the other blue eyed gene, not only will one of their children be brown eyed-ALL of their children will be brown eyed.

Likewise, it is possible, as a result of crossing over during chromosome replication, for the gene responsible for blue eyes to be removed from a chromosome, resulting in only one child having brown eyes in a family.

The blue eyed GENES (more than one) are actually recessive, but they aren't the only blue eyed genes.

Answer 5

Yes,it's abosuletely possible. It's not likely. But their may be genes in past family which had brown eyes in them. And the child could have inherited it. Although the child is very likely to have blue eyes it is still likely. And could happen.

Answer 6

If there have been previous relatives on either side of the family, then there is the chance of a brown eyed recessive gene in one of you.

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Answer 7

Yes. If you have brown eyed people in your family yes.

Answer 8

of course. if your parents/grandparents/etc. have brown eyes, then yes. it is in your genes

Answer 9

yes as either partner may have the brown eye gene present in them from their own parents.

Answer 10

Well science class always said no, but according to a recent study we are all so "mixed" up with so many different kinds of hair colors, eye colors, heights, and weights that really your child can have brown eyes.  It is not likely but it can happen.  Google you question and it should take you to the report that said that.  I forget where it was but I do remember that it said you can pretty much have anything.  Like I saw 2 dark skinned African-American people have a Cacausian baby. And I do not mean "light" skinned.  I'm talking about blonde hair and blue DNA tests proved that the man was the father.

Answer 11

Yes they can.

There are two genes one from each parent so Mum can have blue eye gene from one of her parents and a blue, brown hazel or green recessive gene from her other parent and Dad can too, and therefore the baby can have any colour eye depending on what's in the family.

Blue eye colour is generally recessive, but not always.

Answer 12

No, they cannot.  Blue eyes are recessive traits with alleles represented as bb and brown eyes are dominant represent as either BB or Bb. Two people expressing recessive traits cannot produce a child that expresses a dominant trait because they simply lack the allele to do so.  You cannot get a BB or a Bb when you only have bb alleles.  It just isn't biologically possible according to Mendelian genetics regardless of what traits the grandparents, aunts, uncles express.  Sorry.

However, two people with brown eyes, provided they both carry a recessive gene for blue eyes (Bb), can have blued-eyed babies. There is a 25% chance of this occurring.

Answer 13

Yes

Answer 14

Yeah, sometimes eye colour happens because of dormant genes (genes that skip a generation).  For example, I have black hair, my parents both have black hair and because my nan was ginger, I get ginger facial hair.

Answer 15

Yes, of course, you may both carry the gene for brown eyes. Blue eyes are a recessive trait, while brown eyes are dominate.

Answer 16

It possible. It depends on the genes in the family. If there are people in your families that have brown eyes, then yes.

Answer 17

Theoretically, no.  The blue-eyed gene is recessive, so two blue-eyed parents have no brown-eyed gene to pass on.  However, the gene picture for eye color is actually pretty complicated, and odd things can happen.

If you're asking about a specific instance  in which  a blue-eyed woman with a blue-eyed husband gave birth to a now brown-eyed child, don't be too quick to assume the worst.  If the husband  has uncertainties, DNA testing should reveal the truth.  And if that child was born in a hospital, there may be a third explanation in addition to genetic fluke and infidelity.

Or if you're a blue-eyed person with a blue-eyed spouse and long for a brown-eyed child, better just accept that it's extremely unlikely to happen!

Answer 18

yes they can if someone like yr mum or dad has brown eyes

Answer 19

It can happen..it's all about recessive genes. My husband, son, and I all have blue eyes, but we were told our son could have different colored eyes if any of our parents or grandparents had different colored eyes.

Answer 20

i learned at school that dominant genes cannot be overrules by recessive genes. Both my parents are dark hared and dark eyed, and they are both left handed. But my sister and i are both right handed. Also, everyone in my family (and my exes family) have always have brown/brown, but my second daughter is blonde/green. We have no idea how it happened - but it did!!

Answer 21

yes they can

Answer 22

That fully depends on God