What can be predicted about the offsprings of a couple, if both of them can read the numbers in the picture given below clearly ?

Question

What can be predicted about the offsprings of a couple, if both of them can read the numbers in the picture given below clearly ?, They can have colourblind sons as well has colourblind daughters, They can have colourblind daughters but not colourblind sons, They can have colourblind sons but not colourblind daughters, There is no chance that any of their children can have colourblindness

MARKS App · Accepted Answer

These charts are called Ishihara's charts and are used for detection of colourblindness. Since both the parents can identify the numbers clearly, they are not colorblind. The mother may not have colourblindness gene or may be a carrier. So the genotype of the mother could be XX or XXc. Father will definitely not have colourblindness gene and will have phenotype XY. If mother is a carrier then half of their sons may be colourblind but the daughter will never be colourblind

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