My Parents have brown and blue eyes and my grandparents had Brown Hazel and Brown but l have Green Hazel how is this possible?

sounds like mommy was gettin around..

your parents can be a carrier for the hazel gene which could be why or you have an incmplete dominance of both so its mixed.im sure ur not adopted.if you want me to explain more email me on little_mel_91hotmail.com

Often genes can skip generations, or even mutate.

So do any of your granparents have your colour ?

If not then the gene has mutated, it is rare in eye genes, but everyone on earth has at least one mutated gene.

So your either a chip off the really old block or a whole new block =]

Its quite simple actually, 4 words, dominant and recessive gene. Maybe one of your parents had a recessive gene containing the green eye gene, and your other parent had the hazel eye gene. Pretty simple, its 7th grade science.

Same thing with me, how can l have green hazel eyes when everyone is my family for generations all had brown eyes. It is the genetics code & ur pigment of the eyes. Explaining the genetics would be a long thing so here is short story. Mom + dad = u

Mom is eyes r brown = b1b2
Dad is eyes r brown = b1b2

just for example, every gene we have, eye color, hair color, skin color has a code called a genotype.

and the chart comes to be like a pie chart
Mom = B1B2
Dad = B1B2

When u add the parts of the genotype, B1/B2, it becomes a new code.

B1B1 . B1B2 .
B1B2 . B2B2 .

Terrible chart l know, but B1b1 = brown, b1b2 = brown & b2b2 = green, u had a 25% chance of having green eyes. Here is a link of a picture to help u understand more.

http://upload.wikimedia.org/wikipedia/commons/1/17/Punnett_square_mendel_flowers.svg

Eye colour is determined by the interactions of at least three genes. There is no ''blue gene ''brown gene'' or ''hazel gene''. The eye colour genes code for density of pigment & location of pigment. If u have no pigment in all three layers, u will have pink, albino eyes. If u have dense pigment in all three layers u will have very dark brown eyes. All the other colours r in between. Examples r little pigment in just one layer gives light blue, denser pigment in one layer gives med blue, light pigment in two layers gives green, dense in one layer, light in second layer gives green hazel etc etc.

A blue eyed parent & a brown eyed parent can have children with green, hazel (there r many shades of hazel) or brown eyes.

Very simply - eye color is determined by the thickness of the iris. Blue being thin up to Brown being very thick. Hazel is a thickness somewhere between the two (and green). So it is very possible that you would have hazel eyes when combining a thin with a thick.