[CarrotAndStick]

Eye colour inheritance is far more complex than the erroneously simplified "brown gene", "blue gene" etc.

There are people in India with blue eyes, while both parents have brown eyes.

[Scutter]

Eye colour inheritance is far more complex than the erroneously simplified "brown gene", "blue gene" etc.

Make sense. I wish they'd stop teaching the oversimplified version. I know they are, because my 8 year old explained it to me a year or so ago.

[scrabblehack]

There could be a dormant recessive gene for many generations though.

Bb x Bb = bb (blue), with p = 0.25
= Bb (brown), with p = 0.5
= BB (brown, no recessive gene), with p = 0.25

I'm an amateur here but you would think that a blue-eyed child would almost have to get one gene from each brown-eyed parent, rather than both genes from one parent.