Ask a Geneticist

I thought I heard a geneticist on TV say that the gene that creates blond hair also creates blue eyes, and I thought he suggested that only blonds have blue eyes - is this correct?
I read on your website about the mice that ended up different colors based on what their mom ate while pregnant. How does that work?
Can two parents with blue eyes have a child with brown eyes?
Can two parents with blue eyes have a child with brown eyes?
How the two gene model of eye color works
If evolutionary theories hold true, how did the leap from 24 to 23 chromosome pairs occur from 'apes' to humans? How is it possible for two chromosomes to merge into one, and for the resulting species to survive to breed?
Two different colored eyes
Does the dominant allele for a given trait show up as the prevalent phenotype in the population at large? For example, the presence of dimples is controlled by a dominant allele, but the majority of people do not have dimples. Why is this?
Is diabetes a genetic disease?
Can blue-eyed parents have a baby with brown eyes? Or green eyes? Can two parents without a cleft chin have a child with one? Can two curly-haired parents have a child with straight hair?
Is it possible for 2 Rh negative parents to produce a Rh positive child? I am pregnant with my second child. My blood type is O-. My husband and daughter both have A-. At my last OB appointment I was told that at my next visit I would have an an
I am 15 weeks pregnant and I recently had a series of bloodwork done. I found out that I was AB+. My father is definitely O- and my mother is unsure of her type. I have seen online many sites that say this is not possible, that my father cannot have
There are a lot of cases of lupus on my mother's side of the family. Both my mom and my younger sister have it. Is lupus genetic? Can I pass it on to my daughter? I want to know -- I have seen what this illness can do. I want to be ready.
My eleven year old daughter was born with blue eyes. When she was about five months old one eye began to turn brown but the other one stayed blue. She now has one predominately blue eye with a touch of brown in one area and a predominately brown eye
Eye color against the rules 1
Eye color against the rules 1
Eye color against the rules 1
Hello, I am trying to understand more about the gene that is responsible for cheek dimples and chin dimples. I understand how a set of parents <i>Dd</i> and <i>Dd</i> could have a child that is dimpleless, but is it genetically possible for a set
I am a redhead and I have Rh negative blood. Is there any genetic correlation between the two? Also, what is the difference between Rh negative and Rh positive blood types? Thanks
My father is an identical twin and my husband's grandfather is a fraternal twin. Does this increase our chances of having twins, or is the genetic trait only on the mother's side and only for fraternal twins? (P.S. we've always hoped for twins - a b
Is it possible for two brown eyed people to have a child with blue eyes? Both of these people have one parent with blue eyes,and one parent with brown eyes. Can brown-eyed parents have a blue-eyed baby?

Recent Questions

December 16, 2014: My mother who recently passed away was adopted at birth and I have been searching for her biological family.  I recently received my results from Ancestry DNA and was matched with a gentleman it says is likely my first cousin.  He is 83 however and I'm 30 so it seems like the age might be a little off for that to be the relationship.  I'm just curious if it's possible for them to mistake him for a first cousin when there is a different relationship?  Is it possible for him to instead be my mother’s sibling, my uncle?  What other possible relationships could it be if any?
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December 3, 2014: My husband and I both have brown eyes. Mine are a lighter brown and his are dark brown. We have three children. One with green eyes (exactly the color of my sister's eyes), one with blue eyes, and one with dark brown eyes. My mom had green eyes, all the other grandparents had dark brown eyes. Where did the blue eyes come from?
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November 12, 2014: Why do some Africans with albinism have green eyes?  And why if they make no pigment are they darker than Europeans with albinism?
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November 6, 2014: My son had recently been diagnosed with a rare genetic condition.  It is typically thought of as a recessive condition, but latest research suggests that it could be transferred through tri-allelic inheritance.   Can you please explain this type of inheritance?
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Preguntas recientes

October 21, 2009: ¿Es posible que dos padres con ojos azules tengan un bebé con ojos cafés?
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October 21, 2009: ¿Es posible que dos padres con ojos azules tengan un bebé con ojos cafés?
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June 4, 2009: Leí en su página de Internet acerca de los ratones que resultaron ser de diferentes colores debido a lo que comió la mamá mientras estaba embarazada. ¿Cómo funciona eso?
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August 29, 2007: Si las teorias de la evolución son correctas, cómo es que ocurrió el cambio de 24 a 23 pares de cromosomas de "los simios" a los humanos? Cómo es posible que dos cromosomas se unan y que la nueva especie surgida sobreviva y logre reproducirse?
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