Color blindness is a recessive trait. the gene for the color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the father in the first generation. what must be true about the father?

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)

lipid

explanation:

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.