A scientist was testing the accuracy of Chargaff's rule. She noticed that a DNA molecule contains 40% adenine, what are the percentages of each of the other
nitrogenous bases?
O A. 20% cytosine, 20% adenine, 20% guanine
B. 20%thymine, 40% guanine, 40% cytosine
C. 40% thymine, 10% guanine, 10% cytosine
D. 40% uracil, 10% guanine, 10% cytosine

Which of the following systems in absorbing oxygen and releases carbon dioxide

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water