The most common scenario for eye color inheritance is that a father and mother with brown eyes will have a child with brown-eyed irises.
But perhaps you have witnessed how brown-eyed parents give birth to blue-eyed children.
Why does this happen? The answer to this question should not be based on the possibility of a child substitution or adultery.
Genes are to blame for everything, of course.
According to a 2010 study published in the Journal of Human Genetics, eye color is determined by 16 genes.
For this reason, the final result may be unpredictable.
There is another possible scenario - when two parents with a recessive gene for blue eyes may have a brown-eyed child due to modifier genes or mutations.
Mutations occur when genes are switched off for a variety of reasons. This can happen due to environmental influences or a disease.
