How are green eyes produced genetically? Can a brown eyed person and a green eyed person produce a blue eyed baby?
Brown eyes are encoded by a dominant gene (for a higher amount of iridial melanin). All other colors are created by varying amounts of less melanin. A blue-eyed baby may become green-eyed or even brown-eyed as s/he grows older as pigment accumulates. Eye color typically becomes more stable after 6 years of age in most if not all children. see: Archives of Ophthalmology. 115(5):659-63, 1997 May. and European Journal of Human Genetics. 4(4):237-41, 1996.