Answer:
50% will be normal and 50% will be carriers
Explanation:
Color blindness is a reduced ability to distinguish between certain colours.
The condition is often inherited. Other causes include certain eye diseases and medication. More men than women are affected.
If such a carrier woman with normal vision (heterozygous for colour blindness) marries a normal man (XY), the following progeny may be expected in the generation: among the daughters, 50% is normal and 50% are carriers for the diseases; among sons, 50% are colour blind and 50% are with normal vision.
Colour blindness is an example of a sex-linked characters.
Sex-linked characters are characters controlled by genes located on the X-chromosome.
The genes for these characters are recessive.
The male has only one gene for a sex-linked character (X^cY).
A female has two genes for sex-linked characters. One in each of the sex chromosomes. If she is homozygous (X^cY^c) for the recessive allele the trait will be expressed.
If she is heterozygous (X^CX^c) she will be normal but carry the abnormal trait involved. She is known as a carrier.
If a colour blind woman marries a man with a normal vision, All their male children will be colour blind(X^cY) because they will inherit if from their mother as the 'Y' chromosomes is empty of the trait.
All their female children will have a normal vision (X^CX^c).
