The man does not transfer the color blindness to his male sons:
Because the color-blind genes are dependent on the sexual chromosome (X). This chromosome is not inherited from the father except females. The males inherit from their father only the sexual chromosome (Y), which does not have the characteristics of color blindness.
Because the color-blind genes are dependent on the sexual chromosome (X). This chromosome is not inherited from the father except females. The males inherit from their father only the sexual chromosome (Y), which does not have the characteristics of color blindness.