* 1 in 12 people have some sort of color deficiency. About 8% of men and 0.4% of women in the US.
* 0.38% of women are deuteranomalous (around 95% of all color deficient women).
* 0.005% of the population are totally colour blind.
* 0.003% of the population have tritanopia.
* Protanomaly occurs in about 1% of males.
* Deuteranomaly occurs in about 5% of males. It's the most common color deficiency.
* Protanopia occurs in about 1% of males.
* Deuteranopia occurs in about 1% of males.
That depends on exactly how you define the term.
Humans are trichromats: our eyes contain color receptors that are sensitive to three different spectral bands.
In "color blind" people, there's something wrong with one or more of these types of color receptors.
Most mammals are thought to have only two types of color receptors. This doesn't make them completely insensitive to color, but it does give them a type of color blindness.
Sea mammals appear to only have one type of color receptor, meaning they can only distinguish between colors based on their brightness.
Approximately zero. Color blindness is not in and of itself fatal. There may be some fatalities from color blind people not noticing warning signs (mistaking a red traffic light for a green one, for example), but it's pretty hard to get concrete numbers on things like that, since if they die as a result it's effectively impossible to prove "they saw the red light and thought it was green" as opposed to "they didn't notice the light at all" or "they knew the light was red, but thought they'd be okay if they ran it away."
since it is a recessive trait, the person must have 2 alleles for color blindness if female ( Xc Xc ) or just one if male ( Xc Y )
Because of this, colorblindness is found more often in males than it is in females
No. It is probably about 50-50.
2
who discovered color blindness
color blindness night blindness snow blindness
Yes. See Wikipedia - Pingelap (#Color-blindness)
there are 1000005000 kinds of blindnesses
1 out of 10
It is not true that color blindness is most common in females. Color blindness is most common in males and approximately 8 percent of men have it.
more than 199,546 males our color blind
The cause of color blindness is X-linked factors.
Color blindness is hereditary and non-communicable.
Colour (color) blindness is genetic and is not curable.-- The question asks whether red-green color blindness is treatable, not curable.