How is it possible for 2 brown eyed parents to have a blue eyed child brown eyes are the dominant trait?

Eye color is not an example of a simple genetic trait, and blue eyes are not determined by a recessive allele at one gene. Instead, eye color is determined by variation at several different genes and the interactions between them, and this makes it possible for two blue-eyed parents to have brown-eyed children.

How is it possible for a child to have blue eyes if both the mother and father have brown eyes?

Because brown (B) is dominant over blue (b). Two parents who are Bb and so have brown eyes each have a 50\% chance of passing a b to their child. If they both do, that child would be bb and have blue eyes.

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

A common myth is that parents who both have blue eyes cannot have a child with brown eyes because of dominant and recessive genes, but in reality genetic variations sometimes produce unexpected results. Though there is a less than 1\% chance of blue-eyed parents having a brown-eyed child, it is not out of the question.

What are the chances of having a blue or brown eye?

Here are the rest of the possibilities: Each child has a 25\% chance of having brown eyes and a 75\% chance of having blue eyes. This is simplified since the other eye color genes (like those that influence green eyes) are being ignored.

Are brown eyes dominant or recessive?

Brown eyes are an indication of the presence of a dominant gene. This gene is responsible for the pigmentation in the eye, and in its presence, more pigment is produced, thus the brown eyes. The gene responsible for blue eyes, however, is actually a recessive gene. This means that in the presence of a dominant gene, it will be trampled over.

Why are some people born with blue eyes?

The recessive gene causes less pigment to be produced in the eye, and blue eyes are an indication of the least amount of pigment being produced. The blue-eyed gene can be passed down from one generation to the next without manifesting itself, waiting for the ‘best’ time to appear, which is when two carriers of the gene have children.