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A female with normal vision, whose father was colour blind, breeds with a colour-blind male. Colour...

A female with normal vision, whose father was colour blind, breeds with a colour-blind male. Colour blindness is recessive and X-linked (female XX and male XY). What is the probability of the first child being colour blind?

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Colour blindness is the X linked recessive trait. Female with normal vision (XcX), whose father was colorblind (XcY). Therefore, the female would be a career for the colorblind. Carrier female breeds with colorblind male (XcY). Therefore, offspring would be XcXc; XcX; XcY; XY. therefore 50% chances that their first child (either daughter or son) would be colorblind.

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