Multiple Choice
Which of the following is a characteristic of DNA?
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7. DNA and Chromosome Structure
DNA Structure
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In the structure of DNA, cytosine (C) always pairs with which of the following bases?
A
Adenine (A)
B
Uracil (U)
C
Guanine (G)
D
Thymine (T)
Verified step by step guidance1
Recall the base pairing rules in DNA, which state that specific nitrogenous bases pair with each other through hydrogen bonds.
Identify that DNA contains four bases: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).
Remember that Adenine (A) pairs with Thymine (T) in DNA, and Uracil (U) is found only in RNA, not DNA.
Understand that Cytosine (C) pairs specifically with Guanine (G) through three hydrogen bonds, ensuring the stability of the DNA double helix.
Conclude that in the structure of DNA, Cytosine (C) always pairs with Guanine (G).
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