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Normally someone with color blindness is born with a genetic abnormality of the retinal tissue in the eyes. The color-sensitive cells in the eye (cones) respond incorrectly to various frequencies of light, leading to difficulty or inability in perceiving some colors.
Color blindness is more common in men. There are some cases of the condition apparently resulting from outside causes, including:
- Chemicals or medications
- Old age (macular degeneration and general decline in body function)
- Injury (trauma to the brain or optic nerve, UV damage)
- Disease (Diabetes, sickle cell anemia)
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∙ 12y ago
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Can you give me a sentence using color blind?
The lonely old man at the park is color blind.
How do you describe the color yellow to a blind man wherein the man is blind since birth?
probably not <><><> First. communicate what SEEING is, then COLOR, then the color YELLOW. A comparison might be made to senses that the blind person has, such as hearing, taste, smell or touch.
Can color blind people become cops?
yes color blind people can become cops all they have to be able to do is see(:
If a color blind womnan married a color blind man what would their ofsprings genotype and phenotype be?
you can't predict that. it depends on what sex the offspring is. if it is a female, she could be color blind because her father is, but a male could be color blind either way. because color blindness is carried on the Y chromosome and not the X chromosome.
What is the probability that a woman who is a carrier of the colorblind gene and a color blind man will have a first son who will be color blind?
The probability is 0 (but the daughter will be a carrier of the color blind gene). This is because the gene dictating whether someone is color blind or not is linked to the X chromosome (and not the Y). The color blind gene is a recessive gene whilst the normal color vision gene is a dominant gene. Hence if a girl (XX) has one normal vision gene (from one parent) and one color blind gene (from the other parent), her normal vision gene will be dominant to the recessive color blind gene and hence she will have normal vision (but she will be a carrier of the color blind gene). If both her parents contribute the recessive color blind gene to her, then she will be color blind. For a woman (XX) to be color blind, she needs to be have both genes to be recessive (ie where there is no dominant normal color vision gene to dominate). For a man (XY), as long as the X gene contributed by his mother is a color blind gene, he will be color blind because he has no other X chromosome where a dominant normal color gene could reside. Hence, to answer the question, a man with normal color vision (XY, with a dominant normal color vision X gene since the gene can't be the recessive color blind gene otherwise he will be colorblind) and a colorblind woman (XX, both recessive color blind genes), will each contribute an X each the child. The man will contribute his only X chromosome which carries the normal color vision X gene and the woman can only contribute a recessive color blind gene. The man's normal color vision X gene will be dominant, and hence the daughter will definitely have normal vision (despite being a carrier).
How do you describe color blue to a blind man since birth?
You simply can't.
What are some facts about X-rays?
The man who invented the x-ray was color blind.
Color blindness is an X-linked recessive trait A color-blind man has a daughter with normal color vision She mates with a male who has normal color vision What is the expected phenotypic ratio of t?
The phenotypic ratio will be 1:3.his son will be color blind.
Are tortoise color blind?
Yes. They are color blind. :)
What age do you die from color blindness?
You can become color blind at any age.
Do guys see in full color?
Theres no way to know for sure but it is more common for guys to become color blind than girls.
In Barack Obama Dreams of your Father How does Obama become aware of the existence of racism?
he doesnt. he is color blind.
