What is the chance that a daughter will be colorblind?

Color blindness is generally inherited in an X-linked recessive pattern. Since daughters have two X chromosomes, they need to inherit the color blindness gene on both X chromosomes to be colorblind. If the father is colorblind, he will pass on his X chromosome with the color blindness gene to his daughter, while the mother can pass on either a normal or affected X chromosome. Therefore, the chance of a daughter being colorblind depends on her mother's carrier status; if the mother is a carrier, there’s a 50% chance, but if she is unaffected, the chance is 0%.