In humans, normal color vision vs. color blindness is determined by alleles C (normal) and c (color-blind) at X linked chromosomes a. Can a normal daughter have a color-blind father? A color blind mother? b. Can a normal son have a color blind father? A color-blind mother? c. Can two normal parent have a color blind son? A color blind daughter? d. A brother and sister both color-blind. Is it possible for themt o have a normal brother? A normal sister? One parent who is normal?