Why are some eyes blue and green and not brown? (please dont say because they are born like that)?

Question

Why are some eyes blue and green and not brown? (please dont say because they are born like that)

Answer 1

Odd as it sounds, it’s much more common for brown-eyed parents to have blue-eyed children than for blue-eyed parents to have brown-eyed children.



That’s because brown eyes are dominant, and the eye color likely will have already shown up in a parent if the trait is in the gene pool. So absent the dominant brown-eyed gene, blue-eyed parents are likely to just keep on producing blue-eyed children.



However, blue-eyed parents can have brown-eyed children, although genetic processes for that possibility aren’t at this time well understood.



But why do blue eyes show up in children of brown-eyed people? This is because genes for blue eyes are “lurkers.” These recessive genes stay in the background until a certain combination of genetic material occurs—i.e., a contribution of a recessive blue-eyed gene from each brown-eyed parent.



Thus, even though genes producing brown eyes are dominant, it’s more common for brown-eyed parents to have blue-eyed children than for blue-eyed parents to have brown-eyed children.



A pigment called melanin determines the color of the eye.



There is still much to be learned in genetics about how eye color is passed along from generation to generation.

Answer 2

Brown eyes are the dominate allele. Blue eyes and green eyes are basically a genetic defect in the allele.

Answer 3

it relatively is a private determination. eco-friendly is the main uncommon, yet all colorations of eyes could be marvelous whilst mixed with complimentary coloring of hair and dermis. Blue eyes and brown hair are marvelous, as are eco-friendly eyes and crimson hair or dark brown eyes and blonde hair. The trick is to take your very own features and play up your strengths!

Answer 4

its all about genetics!!!
people wit blue eyes have got both recessive alleles from their parents (bb) thats why theyre eyes are blue. its cuz their each of their parent passed down a (b) to the kid. people wit brown eyes got the dominent ones (BB) cuz each of their parent passed down a (B)! im not sure how people get green eyes though... : (

Answer 5

Pigmentation.

just like how skin colour is determined by the pigment on the skin... same goes for eye colour.

and just like skin colour... the lighter the eye colour... the more susceptible the eyes are to sun damage.

Answer 6

My teacher says that the colour of eyes is due to the structure of IRIS.thats different in every human.THats why we hwve eve-scan as passwords.

Answer 7

It is in your genetic make up. It depends on the chromosones from your parents. It is a mathematicl equation and somewhat like gambling.

Answer 8

The genes, its usually absolutely random. But, any child is most likely to have the mother's eye color if its not random.

Answer 9

Because of genetics from there parents. That is the only logical reason.

Answer 10

Jeans.