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# If 1 parent has brown eyes and the other has blue eyes what colour will their baby have?

Updated: 8/9/2023

Wiki User

13y ago

Best Answer

nobody can say for sure it is just random

Nobody could be a 100% sure. It all depends!!!!

Answerit depends...most likely brown because it's more common. but it's a fifty/fifty chance. it's most dependent on which gene the baby gets, either your eye gene or his eye gene.

-kani92

Most likely to have brown eyes as it is a dominant gene and the blue eye gene is a recessive gene. it is a 75% that he/she has brown eyes

annie01

It is impossible to say as we don't know if the mother has Bb (brown and blue) eye genes or BB (two brown eye genes.) The father must have bb (two blue eye genes) as that is the only way to have blue eyes.

If the Mother is Bb it is a 50% chance either way but if the mother is BB it is a certainty that the child will have brown eyes. If one of the mother's parents have blue eyes then it is definitely 50/50 but if not there's no way to tell.

Wiki User

12y ago
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Wiki User

11y ago

Most likely blue eyes.
Blue eyes. Blue eyes are a recessive trait and the only way to have true blue eyes (not hazel blue or anything in between) is if bothe recessive genes are present. If there happens to be a touch of brown in those blue eyes then the eye color can vary.
Most likely blue, since blue is recessive.
The eyes will most likely be hazel or blue.

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Wiki User

12y ago

Brown eye gene = B

Blue eye gene = b

Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb.

If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes.

If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.

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Wiki User

13y ago

The colour of peoples eyes is completely random, it has nothing to do with genes or DNA, I was born with blue eyes, but they changed to brown later on, so, they could be green, brown, blue or pink*

*Pink applies to Albinos, who do not have any colour pigment in their body, meaning they have pink eyes, white skin and white hair.

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Wiki User

11y ago

The baby could have any color of eye from brown to hazel to green to blue - the genetics of eye color are complex and multifactorial. However, in general blue eyes are mostly recessive and brown eyes tends to be dominant.

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Wiki User

8y ago

You'll have to look at the baby's eyes and see; there's no easy way to predict that. If both parents had blue eyes, then we can predict that the baby will have blue eyes, but even this isn't 100% certain,

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Wiki User

8y ago

If you received a blue allele (dad) and a brown allele (mom), your eye color would be brown because brown is the dominant allele. If you have blue eyes, that means you received blue alleles from both parents. But if the brown eyed parent carries the blue eye allele, the chances that the baby will have brown eyes is 50:50.

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Wiki User

14y ago

The offspring will most likely turn out to have brown eyes since brown eyes are a dominant trait.

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