To draw a Punnett square for a female carrier of color blindness (X^cX) marrying a man who is not color blind (XY), create a 2x2 grid. Label the columns with the mother's alleles (X^c and X) and the rows with the father's alleles (X and Y). The resulting combinations will show that there is a 50% chance of having a color-blind son (X^cY), a 50% chance of having a normal son (XY), a 50% chance of having a carrier daughter (X^cX), and a 50% chance of having a normal daughter (XX).
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