Which of the following accurately describes the structure of DNA? A. A always pairs with C, and G always pairs with T. B. DNA consists of four bases: A, G, C, and U. C. DNA is made up of nucleotides, containing a 3-carbon sugar, a phosphate group, and base. D. DNA is in the form of antiparallel strands twisted as a double helix.

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dulce667 dulce667

08-08-2017
Biology

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Which of the following accurately describes the structure of DNA? A. A always pairs with C, and G always pairs with T. B. DNA consists of four bases: A, G, C, and U. C. DNA is made up of nucleotides, containing a 3-carbon sugar, a phosphate group, and base. D. DNA is in the form of antiparallel strands twisted as a double helix.

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Among the choices given, the one that accurately describes the structure of DNA is D. DNA is in the form of anti-parallel strands twisted as a double helix. Moreover, DNA is primarily made up of nucleotides which consists of a nitrogenous base, at least one phosphate group, and a five-carbon sugar. It should also be noted that purine adenine (A) only pairs with pyrimidine thymine (T) and the purine guanine (G) with pyrimidine cytosine (C).