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Can a baby born of one parent with blue eyes and one parent of brown eyes have blue eyes or will the brown overide?

2007-03-01 23:59:14 · 67 answers · asked by alison c 1 in Pregnancy & Parenting Newborn & Baby

67 answers

Yes, the baby can have blue eyes.

Other genes can override the blue eyes and blond hair. But, take my family for example. My mother has blue ayes and fair hair, my father has brown eyes and dark hair. My brother and me are both blond with blue eyes.
This means my father also has to carry blue eyes and blonde hair genes! It was a 50-50 chance for me (and my brother) to be like our mom.

However, if one of the parent does not carry a blue eyes gene, the child will not have blue eyes. What cah happen, though , is that the baby is born with blue eyes but his or her eye colour will change in 6 - 18 months.

2007-03-02 00:03:46 · answer #1 · answered by M 6 · 4 0

Brown eyes tend to predominate over blue, but its not unheard of for a blue eyed person and a brown eyed person to have a blue eyed child, especially if the brown eyed parent carried a blue gene from his/her parents. Its the exception rather than the rule though.

My 13 week old son still has blue/grey eyes but me and his dad both have dark hair and brown eyes - only my other half's father has blue eyes and my grandmother, everyone else has brown in the family, so we're expecting his eyes to go brown.

2007-03-03 08:41:38 · answer #2 · answered by Anonymous · 0 0

Even though the "Brown eye" (this includes brown and green eyes) gene is dominant, the recessive "Blue eye" gene ( this includes blue and grey eyes) can succeed in a child who's family hasn't demonstrated blue eyes for generations. It is likely that your child may be brown, green, grey or blue eyed no matter what colour eyes you or your partner have. You can only predict if you know for certain that there has only been one type in both your families for ever. Which no-one can absolutely swear to or prove, you'ld be surprised that amount of mixed race families that don't know because they all appear to be white etc. eg, King George III's wife was mixed race, can you see this in her descendants?

2007-03-02 00:37:03 · answer #3 · answered by okocha 1 · 0 0

Eye color is an inherited trait influenced by more than one gene. In humans, three loci associated with eye color are currently known: EYCL1, EYCL2, and EYCL3. These genes account for three phenotypic eye colors (brown, green, and blue) in humans. Eye color is demanding, as all four genes must determine the same color for the eye color to be pure; otherwise a mixed color such as blue-green will result. Eye color usually stabilizes when an infant is around 6 months old.

In other words there isn't just one dominant gene and one recessive gene there's a combination of several genes that affect eye color so if one parent has blue eyes the baby can have blue eyes, brown eyes or anything in between.

2007-03-02 00:20:03 · answer #4 · answered by Miriam Z 5 · 0 0

yes, most certainly. Blue eyes is a recessive gene, and the brbown eyed person could carry the gene for broen and for blue eyes, the brown would be dominant and the person brown eyed, partner blue eyed would carry only blue eye genes, so any offspring could be either blue or brown eyes, with a 50/50 chance of either. If both are blue eyed, then ALL children will have blue eyes.

2007-03-02 00:14:12 · answer #5 · answered by mike-from-spain 6 · 0 1

My mum had very dark brown eyes and my dad light blue
My 2 brother have brown eyes, my sister blue and me green
My brothers have 3 childen between them with blue eyed wives and 2 have brown eyes
My partners has brown eyes and me green and our 8month old has blue eyes
I did in science that if a parent has brown eyes it would overide the blue!

2007-03-02 21:48:31 · answer #6 · answered by lovelylittlemoo 4 · 0 0

Eye colour comes from the parents and works like this:

B for Brown - dominant gene, b for blue - recessive gene.

We each receive one gene from each parent, so people with Brown eyes will either be BB or Bb as the brown gene will dominate.

So, two people with brown eyes can have a blue-eyed baby as follows:

Father Bb + Mother Bb gives four possible combinations:
Child BB (Brown eyes)
Child Bb (Brown eyes)
Child bB (Brown eyes)
Child bb (Blue eyes)

And one parent with brown & one with blue works like this:

Father Bb (Brown eyes) + Mother bb (Blue eyes) =
Child 1 Bb (Brown eyes)
Child 2 Bb (Brown eyes)
Child 3 bb (Blue eyes)
Child 4 bb (Blue eyes)

Of course, there is also the wonderful natural peculiarity that all baby's are born with blue eyes that may change up to 1 years old (give or take).

2007-03-02 00:15:48 · answer #7 · answered by Mouse 2 · 0 1

It depends on whether or not the brown eyed parent has a recessive blue eye gene. My husband and I both have brown eyes, but our son is blue eyed. His mom has blue eyes and my dad had them,s o we both must have had the recessive gene and my son got both and now has blue eyes.

2007-03-02 00:44:46 · answer #8 · answered by ? 6 · 0 0

Brown is dominant, similar with hair, a baby of a blonde and a brunette is more likely to have the darker feature. But, of course the baby still has a chance of having blue eyes, its in the genes.

2007-03-02 00:07:54 · answer #9 · answered by Anonymous · 1 0

The baby could have green eyes. Almost all babies are born with blue and then they change over time. He or she might not have either. Genes can come from a long way back in the family line. I have blue and my husband has brown. Our oldest has hazel, my middle has blue, my youngest has brown. I am pregnant with twins, we will see with them

2007-03-02 00:06:05 · answer #10 · answered by Barbara C 6 · 1 0

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