. A man whose father is a colourblind, marry a woman, who is a daughter of colourblind mother. The offspring of this couple will be


a. all daughter and sons are colourblind

b. 50% colourblind and 50% normal son

c. carrier normal daughter and colourblind sons

d. colourblind sons and normal daughter

Best Answer

Answer ||| (c)

Solution ||| Man is normal while women of colourblind mother is also colourblind. The gene for colour blindbess is present on X-chromosome as a recessive autosomal diseases. One X-chromosome from mother goes to daughter and other to son while the X-chormosome of father (Normal) goes to daughter and 4 chromosome to son.

 

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