The genotype of normal woman with colourblind father =XXh The genotype of normal man=XY 
∴50% of the sons would be colourblind.
A normal woman, whose father was colour-blind is married to a normal man. The sons would be:
Held on 30 Apr 2004 · Verified 9 Jul 2026.
75% colour-blind
50% colour-blind
all normal
all colour-blind.
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