eye genetics

[kvarner]

is it possible for 2 blue eyed parents to have a brown eyed child

[WaldoMcFroog]

In short, not likely at all, but eye colour is a result of the interplay of four sets of genes, so it's not that simple to determine.

For a simple predictor, have a look at this:

http://museum.thetech.org/ugenetics/eyeCalc/ey ecalculator.html

[claireyfairy]

Yes.

If both parents are heterozygous for blue eyes, that is they have one blue eye gene and one brown eye gene then their offspring have a 1 in 4 chance of having brown eyes as each parent only passes on one of their genes to the child.

[Octavius]

Yes, but even scientists don't know how or why.

http://www.seps.org/cvoracle/faq/eyecolor.html

[aka pixi]

I would have thought it was possible too, my granddaughter has two brown eyed parents and has blue eyes so it should be possible the other way round too

[tellboy]

Stop Worrying ?

[girl_lesbian]

claireyfairy is wrong. If a parent had one blue gene and one bron gene their eyes would be brown not blue.

[chazza]

Clairey will one blue and one brown gene not give brown eyes though as the blue gene is recessive?

[girl_lesbian]

aka pixi is wrong. It won't work the other way round becuase bwon is a stronger gene than blue so if you have a brown gene your eyes will be brown no matter what colour the other gene is.

[girl_lesbian]

excuse my spelling, I have had tonsilitis. I think it has ****** my brain a little.

[Ed Strong]

No. In my human biology class (some time ago now) It was explained to me that brown eyed parents can have a recessive gene which enables brown eyed (or mixed blue/brown) parents to produce both blue and brown eyed children. But as blue eyes are made up of recessive genes blue-eyed parents can only have blue eyed children. If it was possible to produce a diagram to make it easier to understand I would.

[claireyfairy]

hmmmm I always get confused which allele is dominant and which is recessive with eye colour. But then you always have the involvement of mutations. Mine are green, product of a genetic mutation.

[joko]

many babies are born with blue eyes regardless, and this may change to brown later