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charl85 | 16:10 Sat 05th May 2007 | Genealogy
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both my kids have got pearcing blue eyes, but me and the father have got brown eyes and brown hair, one of my my kids was born with really dark hair, then went blonde and now is going dark again but my other child was born with white blonde hair and is stil blonde now. now my dad's family all have blue eyes apart from me and partners grandad had blue eyes, but his parents have, brown and browny, green. so why have my kids got blue eyes?
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Both you and the father must have the blue eye gene in you even though you haven't got blue eyes. It's just the same with my friend and her husband who have both got brown eyes and brown hair, both their children are blond with blue eyes!
Basically every physical trait you have is controlled by 2 genes, some of which are more dominant than others. Every egg and sperm contains half of these genes (so 1 gene for each trait) and when the egg is fertilized the dominant gene controls the features.
Brown is a dominant eye colour gene, whereas blue is recessive, therefore each parent will have at least one brown eyed gene. To have blue-eyed children the sperm and egg must both have contained the blue eyed gene, meaning that both you and their father have one brown eyed and one blue eyed gene.

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