I have an eye color question?

Question

i was online and i read this:

"Everyone has two genes for eye color, one from their father and one from their mother. Brown eyes are dominant, so even if someone has one blue and one brown-eye gene, he'll still have brown eyes."

my mom has blue eyes and my dad has brown eyes i have blue eyes..how does this work out if what was qouted is correct?

Answer 1

My mother has brown eyes, and father has blue. I got green eyes!

Did you check the mailman? Just kidding. Your dad probably has a recessive blue gene.

If you do a Punett Square, and ask your dad if any of his parents had blue eyes.

B = Brown

b = blue

Bb = Brown but with recessive blue gene

BB = dominant brown

bb = blue eyes

Bb x bb = 1/2 chance that the offspring will have blue eyes.

Bb - represents your dad

bb - represents your mother

Answer 2

assuming two alleles make up you eye color and that brown (B) is dominant and blue (b) is recessive, your dad is probably Bb and carries the blue allele.

Bb (your dad) X bb (your mom) = Bb, Bb, bb, bb (you)

Answer 3

My guess is a hormone imbalance. My friend has one and he has two different eye colors.

Answer 4

Your mother has blue eyes, so she *must* have two "blue" genes (she is "homozygous blue") - so you inherited one "blue" gene from her.

Your father has brown eyes, so he could either have two "brown" genes ("homozygous brown"), or one "brown" and one "blue" gene ("heterozygous"). Either case would give him brown eyes, since the brown gene is dominant over the blue one.

Since you have blue eyes, you cannot have any "brown" genes. So your father must have one "brown", and one "blue" gene, and you just happened to inherit his "blue" gene.

FYI - human eye colour is actually much more complicated than this. There are at least three seperate genes controlling eye colour (making it a "polygenic trait" - controlled by the interactions of more than one gene), and each of those genes can have several different versions.

This is why there are so many different eye colours in humans: blue, green, hazel, brown, violet, black, amber, grey, etc.

Answer 5

well blue eyes is a recessive gene which is a lowercase letter "e.x. - g" and brown eyes is dominant gene with is a uppercase letter (G) in order to get blue eyes you have to have both recessive gene from both parents, so your mom's gene is "gg" so either gene she gives you is going to be recessive, next your dad has brown with means he has at least one dominant gene, if you get one recessive gene from one parent and one dominant gene from another parent the dominant still covers the recessive, but the recessive gene is still in his body which means he could pass the blue eye gene to his offspring even though he doesn't have blue, your dad's mom or dad probably had blue eyes and gave him the recessive gene and then he got a dominant gene from his other parent, so his genotype is "Gg" so now that your mom gave you a recessive gene, you dad could either give you a dominant gene or a recessive gene, and of course he gave you the recessive gene and your genotype became "gg" just like your mom's. don't you love the way science works =]

Answer 6

you have a one in four chance of having light eyes. its a confusing subject.

Answer 7

it's simple, your dad has one gene for brown eyes and one for blue eyes so he has brown eyes. you just happened to get his blue eye gene instead of his brown eye gene

think of it this way your dad is a Bb and your mom is bb (B is brown eye gene, b is blue eye gene), and you got his b gene instead of his B gene. so you are bb like your mom