wat r diffrent kinds of colour blindness?
547187
Color blindness may be partial (affecting only some colors), or complete (affecting all colors).  Complete color blindness is very rare.  Those who are completely color blind often have other serious eye problems as well. Red/Green color blindness is by far the most common form, about 99%, and causes problems in distinguishing reds and greens. Another color deficiency Blue/Yellow also exists, but is rare and there is no commonly available test for it.
938959
This is due to a defective X chromosome. As a man has only one he is more likely to be colour blind. Females have two X chromosomes so are much less likely to have the condition. Hemophilia where the blood does not clot works the same way.
255501
my brother in law is color blind. hes sees color [ as colorblind people do ] he just doesn't see the right color. but he dont let it bother him ,he just calls it as he sees it untill you correct him and remind him,...."YOU"RE COLOR BLIND!!!!!!"......... "brother in laws"
478268
where colors whiter than you =P black with make contrast between two opposite colors and that = bad
797052
There is no ONE kind of animal.... several species can see color to some extent and it is difficult to prove since animals can not tell us!!\n\nHowever go to this link and it will describe many animals that can see color to some extent.\nhttp://webexhibits.org/causesofcolor/17.html\nsome even better than humans (pigeons and mantis shrimp!)
435147
Females can be colour blind, but it is a lot more common in males. It's all down to genetics - it is an 'X-chromosome sex-linked recessive' disorder. Males (XY) only have one x-chromosome, so will be colour blind with only one copy of the defective gene. Females (XX) have two x-chromosomes, and both of those need to have the defective gene for them to be colour blind. If a female has one copy of the defective gene then she will be a carrier, but will not be colour blind.
54756
It's just a color.\n\n\nMaybe they are color blind
65939
The eye has different types of receptors for color and brightness. The color receptors are sensitive to difference in the wavelength of light, much as the brightness receptors are sensitive to the difference in the brightness. \n\nDo you see green as everyone does? Not quite. There are some people who are color blind.\n\nFrom the wikipedia:\n\nPrimary colors are not a physical but rather a biological concept, based on the physiological response of the human eye to light. The human eye contains receptors called cones which normally respond to red, green, and blue light. Humans and other species with three such types of color receptors are known as trichromats. Although the peak responsivities of the cones do not occur exactly at the red, green and blue frequencies, those three colors are chosen as primary because they provide a wide gamut, making it possible to almost independently stimulate the three color receptors. To generate optimal color ranges for species other than humans, other additive primary colors would have to be used. For species known as tetrachromats with four different color receptors, one would use four primary colors. Many birds and marsupials are tetrachromats and it has been suggested that some female humans are born as tetrachromats as well, having an extra receptor for yellow. On the other hand, most mammals have only two types of color receptors and are therefore dichromats; to them, there are only two primary colors.
731741
I haven't seen that personally.  Actually, according to scientific studies, people with lighter eyes (especially bright blue) tend to have more eye problems than any other eyecolor.  There could be some vitamin or mineral deficiency that Asians have that I am unaware of though.
78687
All the boys will have colorblindness. it depends strongly on the parental generation though.\nSince the father gives the progeny an X OR a Y chromosome (since boys are XY), to dictate the sex of the progeny, and the mother can only give an X chromosome (since girls are XX), therefore if the gene for colorblindness was on the Y chromosome, only the boys would have it because girls cannot have a Y chromosome. :)
1054555
They defintely do not see black and white. \n\nAll mammals except primates (apes, monkeys and us humans) are color blind. Being color blind is not the same as seeing black and white, but not being able to see a channel of the color.
320998
A color vision deficiency does not mean that your child doesn't know the names of colors.  It means that he cannot SEE certain colors very well.  Many males are afflicted - the common term is "color blindness."  This does not impact his intellectual ability in any way.  It means that he might have difficulty noticing the contrast between two colors in a drawing or certain colors may look "washed out" to him.  In other words, you see a green grass but he sees it as kind of gray.  The site below is very helpful.
831547
The color which you are seeing may look differently to other person.\nIt depends on how eyes recieve the color and how the brain interprets the signals.\n\nThis is very difficult to answer. if one can be made to work with more than one brains, then probably, it can be answered correctly!!!
392414
red green colour blind people see shades of grey where we see  those colours.
566341
Humans have three types of color receptors (light-sensitive cells) in the retina.\n\nDogs have only two.  So dogs are not (as some people say) completely color blind.  They can distinguish between blues and yellows ... but not between reds and greens.\n\nThe technical terms are that humans are 'trichromatic', and dogs are 'dichromatic.'
1152765
Totally blind from birth have no idea what colors are.  As you they dream what they know.  People that loose their sight later will dream in color because they have seen color.  It is very difficult for the seeing to understand those that do not.
1066716
You should probably talk to a Genetic Counselor.  I know SOME TYPES of colorblindness are sex linked traits (meaning the gene for the condition is on the X chromosome).  IF this is the case then it is more important to know if the mother is a carrier or not (because a red-green colorblind father will only pass on a Y chromosome to his son (not the affected X), and while the father will pass on the affected X to his daughter, since red-green colorblindness is a recessive disorder, the mother must also pass on an affected X to the daughter for the daughter to have the condition).\nThis is the case with SOME CASES of simple red-green colorblindness, but NOT for all types and cases of colorblindness. (Human disorders often deal with very complicated genetics...)\n\nYou should really seek the advice of a Genetic Counselor.  They will be able to explain the risks for you based on your family histories, as well as tell you for sure if there is prenatal or perynatal testing available, and will have better information than anyone on Yahoo answers can give you.\n\nI've provided a link that tells you all about Genetic counseling...what they do, where you can find one, etc...\n\n\nhope everything turns out ok