What determines the code, or information, of a DNA molecule? the shape (structure) of the nitrogen bases
the frequency (number) of nitrogen bases
the color of the nitrogen bases
the order (sequence) of the nitrogen bases

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.