What Causes Color Blindness Genetically
Color blindness is typically an inherited genetic disorder.
What causes color blindness genetically. The gene which causes inherited red and green types of colour blindness is found only on the x chromosome. This is the reason why men are affected by the condition more than women. You can also get color blindness later in life if you have a disease or injury that affects your eyes or brain.
The most common kinds of color blindness are genetic meaning they re passed down from parents. A color blindness gene is a gene linked with colorblindness. Color blindness is typically caused by genetic factors but on rare occasion may manifest itself due to aging or serious eye disease such as diabetic retinopathy glaucoma or cataracts.
The gene which is responsible for the condition is carried on the x chromosome and this is the reason why many more men are affected than women. The facts about color blindness genetics will take you by surprise. Color blindness is a genetic disease that is observed more in men than women.
Colour blindness is a usually a genetic hereditary condition you are born with it. For a female to be colour blind it must be present on both of her x chromosomes. Inherited color blindness is usually the result of receiving a genetically mutated gene on the x chromosome.
It is most commonly inherited from mutations on the x chromosome but the mapping of the human genome has shown there are many causative mutations mutations capable of causing color blindness originate from at least 19 different chromosomes and 56 different genes as shown online at the online mendelian inheritance in man omim. The proteins produced from these genes play essential roles in color vision. This article will cover color blindness genetics its genetic modes of inheritance and color blindness facts.
Inherited color blindness color blindness from gene mutations. They are found in the retina which is the light sensitive tissue at the back of the eye the retina contains two types of light receptor cells called rods and cones that transmit visual signals from the eye. So for a male to be colour blind the colour blindness gene only has to appear on his x chromosome.
Mutations in the opn1lw opn1mw and opn1sw genes cause the forms of color vision deficiency described above. However research has shown that mutations that can lead to color blindness originate from in excess of 19 different chromosomes and many different genes. If your color blindness is genetic your color vision will not get any better or worse over time.
What is the cause of color blindness. Genetic color blindness ususally results from certain photo receptor cells in the eye cones lacking the ability to pick up either. Red green and blue colour blindness is usually passed down from your parents.
The gene responsible for causing this condition is present on the x chromosome.
