Which Statement Correctly Describes the Arrangement of the Nitrogenous Bases

question 50

Multiple Choice

Which statement correctly describes the arrangement of the nitrogenous bases in the double helix of DNA?

• A) Each of the 4 nitrogenous bases on one DNA strand can pair with any of the other 4 nitrogenous bases on the other strand.
• B) Any purine nitrogenous base on one DNA strand can pair with any other purine on the other DNA strand.
• C) Any pyrimidine nitrogenous base on one strand of DNA can pair with any other pyrimidine base on the other strand.
• D) Any pyrimidine nitrogenous base on one strand of DNA can pair with any purine on the other DNA strand.
• E) Adenine (A), a purine, on one DNA strand pairs with thymine (T), a pyrimidine, on the other strand; Guanine (G), another purine, pairs with cytosine (C), a pyrimidine.

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