Both early american indians and white settlers typically established most villages and towns near a. rivers b. railroads c. trading posts d. animal migratory routes

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

the answer would be d