Question

Which of the following researchers used radioactive markers in experiments to show that DNA was the genetic material in cells? a. Frederick Griffith b. Oswald Avery c. Alfred Hershey and Martha Chase d. James Watson and Francis Crick

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Hershey and Chase wanted to find out which part of the bacteriophage will enter the bacteria and pass on genetic material - protein or DNA. The proteins were marked with radioactive sulfur-35, while DNA contained radioactive phosphorus-32. At the end of this experiment, they found phosphorus-32 in the bacteria, which supports Avery's theory that genes are located in the DNA of the cell.

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