Jose has an extra chromosome on the twenty-first pair of chromosomes. the disorder was once referred to as mongolism. this will cause him to have

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.