Which of the Following Observations Is Part of the Evidence

question 18

Multiple Choice

Which of the following observations is part of the evidence supporting the Watson-Crick structure of DNA?

• A) In the DNAs examined from a wide variety of sources, the adenine and cytosine contents are equal.
• B) A non-virulent pneumococcus can be transformed to a virulent strain by the addition of DNA.
• C) RNA is susceptible to hydrolysis by alkali, whereas DNA is not.
• D) The sum of the purines present in any double-stranded DNA is equal to the sum of the pyrimidines present.

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