In people the gene, which causes one form of color-blindness or Daltonism, is located in the X-chromosome. The affected condition is caused by a recessive gene, healthy condition is dominant.
A girl who has emmetropia (normal eyesight), whose father had color-blindness, marries a normal man, whose father also suffers from color-blindness. What kind of sight is expected in the children from this marriage?
Daltonism is also known as deuteranopia which is a rare form of color blindness. In this form, the retina lacks cone cells having opsins that are responsible for the green color vision. As a result, the person cannot distinguish between yellow, red, and green. The person also cannot perceive purple colors.
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