Can 2 blue-eyed people produce a kid with brown eyes?
There are a lot of people contradicting themselves here. If blue is recessive, then that means blue eyed parent cannot produce a brown eyed kid, since they need two copies of the blue eye gene in order for the trait to be expressed. This is how eye color used to be viewed, as a simple recessive dominant trait controlled by one gene, where brown was dominant over blue. However, we now know that this is not true. Eye colors is more complex and controlled by several genes, so even though it is rare, two blue eyed parents can produce a brown eyed child. So based only on this you cannot conclude that you are adopted or have a different father. I also like to point out that it does NOT matter what eye color your grandparents or grand grand parents had. Genes cannot skip several generations and then magically reappear, you do not have all your ancestors genes floating around in your blood, waiting to be expressed. It only matters what genes your parents pass on to you, and they can only pass
