I only have a basic understanding of eye colour in the brown/blue recessive and dominant example from high school biology.
My husband and I both have hazel eyes. Our daughters both have dark brown eyes much darker than either of us. How is this possible? I thought the dark brown would be dominant and so my husband or myself would need to have this dark brown gene?
Meanwhile our son has blue eyes.
My own parents have blue eyes and hazel. My husband’s parents have blue and green eyes.
Where is the dark brown coming from?