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Biology, 22.06.2019 13:00
In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.
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Biology, 22.06.2019 21:00
What is the difference between hypothesis, theories, laws, and observations?
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Biology, 22.06.2019 23:30
How do light years astronomers to determine the ages of distant objects in space ?
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