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[quote=Anonymous][b][quote=Anonymous]Recessive genetics: Two blue eyed parents can only have blue eyed children. (unless their eyes are not really blue, but are grey --that is a dilution of the brown gene) Green eyes are a mix of brown + blue gene. Dilution gene is an aspect of another gene -- make it lighter, and is recessive.[/b]
True blondes, who remain blondes in adulthood without a trip to the hairdresser: If both parents are true blondes, all off spring will be blonde. Blonde + recessive dilution gene = white blond hair.
Blonde as kids, brown as adults have dominant brown gene. It is possible to have a double recessive blonde hair child, but  (80% against) unlikely if both parents carry the brown gene. Genetics! [/quote]

This is oversimplified and kind of incorrect. Eyes are either pigmented (brown) or unpigmented (everything else). There are several genes that determine the exact shade of unpigmented eye. Two blue-eyed parents can have children with hazel/green/grey eyes. The genes that determine eye color are also very susceptible to mutation. Unpigmented eyes were likely a mutation somewhere in human ancestry, or else we would all have brown eyes.

For the record, I have unpigmented eyes and they have changed color over the years from caramel-brown to amber-green. My DC's eyes are blue-grey.[/quote]

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