In order to show that DNA is the "transforming principle", Avery, Macleod and McCarty showed tha...

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In order to show that DNA is the "transforming principle", Avery, Macleod and McCarty showed that DNA could transform avirulent strains of Pneumococcus. This hypothesis was strengthened by their demonstration that
(a) enzymes that destroyed proteins also destroyed transforming activity
(b) enzymes that destroyed nucleic acids also destroyed transforming activity
(c) enzymes that destroyed complex carbohydrates also destroyed transforming activity
(d) the transformation activity was destroyed by boiling
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