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by Olivebranch on October 19th, 2006

Olivebranch

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Is it genetically possible for two blue-eyed people to produce a brown-eyed child?

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Answers. 8 helpful answers below.

  • by AntigoneRising on October 19th, 2006

    AntigoneRising

    The gene for blue eyes is recessive, so in order to actually HAVE blue eyes, you have to have 2 recessive genes - one from each parent. Therefore, two blue-eyed people both have all blue-eyed genes, and their offspring will have blue eyes (although the shades can vary).

    So, barring mutation, no.

    http://www.seps.org/cvoracle/faq/eyecolor.html

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  • by Farino on October 19th, 2006

    Farino

    Yes but negligably. Typically brown and green are dominant over the colour blue. So the only way for a person to have blue eyes is if both genes from their parents were blue and they do not get a dominant green or brown. So if only blue is passed down then only blue will come out.
    However there are parts of the DNA called introns, junk DNA, that do not code anything at all and appear to be useless. During DNA splicing to reproduce DNA in the body these introns are cut out of the gene but every now and again part or even all isn't left out of the reproduced DNA strand. This is how we get genetic mutation. So it may be possible that the parts of this junk DNA actually reverses the information within the gene saying that the child will have blue eyes and not brown. You do have to bear in mind that this would be extremely unlikely but you asked if it is possible, so my answer is yes.

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  • by Anonymous on October 20th, 2006

    Anonymous

    Yes. the genes can reach back many generations, to produce a baby with many different characteristics. just because two blue-eyed people do not produce a blue-eyed baby, then its got to be the past family genes.

    Two blonde people had a fire engine red haired baby girl.

    So see, nature is nature. don't be ever surprised at the outcome of a newborn.

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  • by Atheist on October 19th, 2006

    Atheist

    dominant and recessive genes are the answer here, if two blue eyed people (male and female) have dominant blue and recessive brown genes in common its a 1/4 chance of brown eyed kids or something like that

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  • by scubaguy on November 11th, 2008

    scubaguy

    I only skimmed the other answers but from junior high biology class (and that was 30 years ago), two brown eyed people can have a blue-eyed baby. But the reverse cannot happen. Two blue-eyed people cannot have anything but a blue-eyed baby. That's a fact, not a probability. Fact. I can't draw the little tables they had us do, but it's like multiplication with bb x bb and the only outcome is bb. Put a brown-eyed into the picture and there's Bb or BB and either way, when a B is possibility, brown is a possibility.

    I have a question - do african americans (blacks) ever have blue eyes?

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  • by courseondemand.net on December 20th, 2006

    courseondemand.net

    It would most likey be due to a congenital defect, one that happens at a stage of deveolpment of the embryo. At a time around conception, rather than a heritable characteristic of the eye color trait. "Blue" eyes is not really a color. It just means less color than the heritable darkest pigment, which is brown. The color brown is from product that a number of genes (more specifcall) DNA make. Even less pigment is "pink",which means no pigment,e.g.,a true albino (defective) gene,which presumably results from a mutation or mishap in an otherwise "normal" pedigree (family tree)history.See www.CourseOnDemand.net.See www.futuregenetics-program.com.Dr.S.Kaniadakis,Ametex-Medical

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  • by courseondemand.net on December 20th, 2006

    courseondemand.net

    Bottom line is that the blue eye characteristic is like any other recessive trait (non-dominate). Nature usually fails to the lower end, than to improve to the upper end. For example, when there's a mutation, it usuallyproduces a less disirable condition,rather than a more favorable one. Dominate genes (from DNA)usually is the better characteristic of the trait. Therefore,"yes", but not the manner nature tends to work.www.cousreondemand.net,www.Future-Genetics-Course.com,www.future-genetics.com

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  • by jasperpayne on February 26th, 2010

    jasperpayne

    yes its very possible. AntigoneRising above me was only showing one scenario which is the same lame cookie cutter answer they have using for ever but the truth is much different. blue eyes scienctifically barely qualify as recessesive with Bb people having on average a 59 % to have brown and a 41% to have blue. there are many cases where Brown is recessessive to blue depending on the gene combination such in my case. i am a person with one blue eyed gene and one brown eyed gene yet i am a blue eyed individual.

    oh and two blue eyed people can in fact have a brown eyed person. my mother is brown eyed and both her parents have blue eyes and shes not adopted or anything. She looks alot like her parents. My mothers brown eyed gene is recessive in her parents and in me.

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