Colour blindness is an X-linked disease. So, woman whose father was colourblind will be carrier for the disease. 
So, possibility of a colourblind daughter (i.e., XcXc in F1 generation is 0%.
A normal-visioned man whose father was colour blind, marries a woman whose father was also colourblind. They have their first child as a daughter. What are the chances that this child would be colourblind?
Held on 30 Apr 2012 · Verified 9 Jul 2026.
100%
0%
25%
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