traffic light?

blue=green?

blue = green in countries that care about colorblind drivers

i did not know that, but i do know something about color blindness it only affects men.

tktk123 said:
blue = green in countries that care about colorblind drivers

HopelessDreamer said:
i did not know that, but i do know something about color blindness it only affects men.

interesting information

HopelessDreamer said:
i did not know that, but i do know something about color blindness it only affects men.

Not true. I know a girl that can't see red.

(Welcome to the internet, where people just Make Stuff Up.)

Sebestian said:
Not true. I know a girl that can't see red.

he's right. a girl can be colorblind if her dad is colorblind.

tktk123 said:
he's right. a girl can be colorblind if her dad is colorblind.

the exact possibility is still determined by her mother's gene, if such colour blindness or colour vision dificiency is caused genetically.
as every trigger about distinguishing colour is stored in X chromosome.

HopelessDreamer said:
i did not know that, but i do know something about color blindness it only affects men.

and..no, gene caused colour blindness, say, red-green, will appear in both genders, if the given male had one such recessive gene in his X chromosome, or the female with both recessive genes in her X chromosomes. therefore males do have a greater chance of getting colour blindness.

我擦咧 好多外国佬啊

As Lamphare said, men have much greater chances of having colour blindness.
To get a colour blind daughter, the father needs to be colour blind, and the mother must carry the colour blindness gene on at least one of her X chromosomes.

its actually even more complicated than that.Genes A B and C work together to make proteins that allow a person to see color. Getting two non functional copies of any of these genes will result in colorblindness. However, if the mother is colorblind and is missing gene A and the father is colorblind because he is missing gene B, all the children will still have color vision because the father can give the children a good copy of A and the mother can give a good copy of B.