why do i have differnet coloured eyes to my parents?

Question

my mum has blue eyes (as do all her family) my dad has dark brown eye(as do all his family) i have green eyes! was i swapped at birth!!?

Answer 1

Genetics can be complicated so I'll simplify it into something understandable!

Eye colour is defined by a pair of genes. The "Brown" gene is the most dominant. The "Blue" gene is second, the "Green" is third.

You only need ONE Brown gene out of two to be born with brown eyes, because it dominates any other genes you have for eye colour.

You need TWO Blue genes out of two to be born with blue eyes, because it is what's called a "recessive" gene.

You also need TWO Green genes to have green eyes.

Your Dad may have a Brown and a Green gene - so his eyes are brown in colour but he still carries the Green gene.

Your Mum may have a Blue and a Green gene - her eyes a blue because blue is dominant over green, but she still carries a Green gene.

So the sperm and egg that made you could have each had a Green gene, so you ended up with green eyes!

Either that or take a really close look at the postman next time he comes....JOKING, joking...

Answer 2

It is definately a genetic thing. There are dominant and recessive genes in everyones DNA. Several genes determine the colour of an individual's eyes, although some have more influence than others. Each individual has two versions of a gene, inheriting one from each parent, and these versions can be the same as each other or different. A single gene is insufficient to explain the range of eye colours that appear in people. It is possible for two blue-eyed parents to have a brown-eyed child, although this is not common. Or even a blue-eyed and brown-eyed couple to have green-eyed children. What happens when you mix blue with brown? You get a greenish color.

Answer 3

No, your father carries the gene for green eyes. He may have gotten it from a great grand-parent. Brown is dominant and won't show the green. Green is dominant over blue. Your brothers and sisters if you have any, will probably only have brown or green eyes. You could have a blue-eyed child due to carrying the gene for blue from your mother.

Answer 4

What happens with eye colour, hair colour, etc is when you are being made, your parents genes mix together. Let's say your mother has a resesive green eye gene, and so does your dad, while their eye colours are totally different, the combine to become the dominent eye colour for the baby. You are mostlikely not adopted.

Answer 5

It is genetics. Blue eyes are recessive and brown eyes are dominant. You just picked up your fathers recessive gene, which was obviously for green eyes.

Genes do not mix as some have said before. Blue and brown do not make green anyway.

Answer 6

My husband and I both have green eyes, his are greenish blue and mine are greenish brown. Three of my four children have BLUE eyes, and one has my color. So what are the higher odds: three children swapped at birth, or three children born without either parents eye color. lol

Answer 7

It could be that the recessive gene for green eyes were passed down from generations and it hasn't shown up until now or it could be that there was a mutation.

Answer 8

You got both set of genes and got beautiful green eyes be proud to be different.

Answer 9

It is quite possible that you were swapped at birth. The probability of you having a completely different eye color then your parents is 1 in 1 million. I would not bring this up to your parents, it might freak them out a little. Maybe try colored contacts!

Good luck!

Answer 10

Sometimes I'd love to think I was swapped at birth. Might want to keep that option open so don't worry about it for the time being.