After DNA was discovered as the genetic material passed down from parent to offspring, Chargaff ran experiments to find the amounts of each nitrogenous base and developed rules for pairing. Chargaff’s rules state that DNA from any species of an organism should have a 1 to 1 ratio of purine and pyrimidine bases (i.e., A+G = T+C): the amount of guanine should be equal to cytosine, and the amount of adenine should be equal to thymine .

Create a color-coded bar graph to display Chargaff’s Data for 3 of the organisms above, include: Title, label x and y axis, x-axis title, y-axis title, scale. Round to the nearest whole number and be sure to color in your bar graph.