There's nothing to be worried about. Every child gets a gene for eye color from each parent. You obviously have the blue-eye gene as one of yours, but because brown is dominant, the brown shows up for you. Your son got your recessive blue gene and a blue gene from his father as well.
I remember the chart from biology class:
B=brown gene
b=blue gene
B b
B b
Each parent has two genes. If they both have brown eyes with a recessive blue gene (Bb), you have a one in four chance of a blue-eyed child. If one parent has blue eyes, and the other brown with a blue recessive gene, you have a 3 in 4 chance.
Often the brown is only "partially dominant," and so a child will end up with light brown eyes - also called hazel or green. You KNOW that person has a blue and a brown gene.
Both my grandfathers had blue eyes, so even through my mothers eyes were very dark brown, she obviously has a recessive blue gene. Dad's eyes are hazel/funny colored we call 'em. And sure enough, just like the chart we drew in biology class, they ended up with four children - two with very dark brown eyes, one with partially dominant brown - so hazel eyes, and one - me - with blue eyes.
Recessive blue eyes has no connection to diseases caused by recessive genes. Genetics is much more complicated than that, and science is learning more every day.





Reply With Quote
.

Bookmarks