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

B,

since males only need one recessive trait for it to show, and the father is not colorblind, the mother at least has to be a carrier for the colorblindness trait.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex