Can two blue-eyed parents have a brown-eyed child? Can two brown-eyed parents have a blue-eyed child?

Answer 1

The answer to both is maybe.
If they are truly blue eyes, then no, the two blue-eyed parents cannot have a brown-eyed child. Similarly, if there is no blue-eye gene in the brown-eyed parents, they cannot have a blue-eyed baby.
However, eye colour, like skin clour, is multi-factorial - it uses several genetic loci.
In reality, there are many shades of colour which still look blue, and many shades of colour which still look brown. Most people have a blend of both, but the brown is most noticeable. As others have said, the easiest way to see if there are blended genes is to look at the relatives of the parents.
That being said, eye colour, again like skin colour, is most likely going to be influenced by the parents' colour. The chances are, that if both parents have blue eyes, then there are not many brown-eye genes around, and their child will have blue or pale eyes, not brown. If both parents have dark brown eyes, then chances are, the child's eyes will be brown. If they have light brown eyes, then the child's eye colour is less certain.

Sorry if this is confusing, but there doesn't seem anyway to simplify it.

Answer 2

I agree with those who say
No, two blue eyed people can't have a brown eyed child and 2 brown eyed people have anywhere between a 0 and 25% chance of having a blue eyed child (if you assume basic autosomal dominance of the brown gene without any funny mutations)

This is one of the basic questions in an intro genetics course because doing a couple Punnet squares solves it.

It is kind of fun to look for poor casting in TV shows or movies that have 2 blue-eye parent with brown eyed kids

Answer 3

Both are possible.

While by a simple Mendel model it's not possible for two parents with recessive blue eyes to give birth to a brown eyed child (no brown eye alleles), it's happened in reality. I'm not surprised though, since a lot of traits are dependent on much more than just one or two genes.

Answer 4

Two blue-eyed parents won't have a brown-eyed child because the fact that each parent has blue eyes says that neither has a brown gene. If either had a brown gene with a blue gene the eyes would not be blue because brown would be dominant.

Two brown-eyed parents can have a blue-eyed child if each parent has a blue recessive gene, and if the child gets that gene from each parent.

Answer 5

all i comprehend is that the brown eye gene is dominant over blue, you particularly ought to look back on the history additionally. on the grounds that it is 2 brown-eyed human beings, then the only threat of having a blue eyed toddler could be little or no, i'm merely unsure the place green eyes might fit in. I have no yet approximately different gene colours of eyes settle for for Brown and Blue

Answer 6

You kind of have to look at the grandparents first. If one of the grandparents has brown eyes, then yes, the grandchild can conceivably have brown eyes even if the parents are both blue eyed.

Answer 7

sure. if one of the parents had someone with blue or brown eyes in their family there is a possiblity. although brown is dominant, so brown would be more likely than blue.

Answer 8

to answer this question correctly, one needs more information...do the grandparents of said child have blue or brown eyes?

Answer 9

Yes of course if the parents are heterozygous.

Answer 10

They eye color of the parents dont matter