What did chargaff discover while studying bases in the dna of organisms a. the bases in the dna of each organism were unique. b. the ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine. c. the overall percentages of bases were different from one organism to the next. d. there were equal amounts of all four bases in every organism, or 25 percent of each base.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !