Scelta multipla
In DNA structure, adenine (A) always pairs with which nitrogenous base through hydrogen bonding?
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7. DNA and Chromosome Structure
DNA Structure
Scelta multipla
In DNA structure, which nitrogenous base forms complementary base-pairing with cytosine (C)?
A
Uracil (U)
B
Guanine (G)
C
Thymine (T)
D
Adenine (A)
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Recall the base-pairing rules in DNA, which state that specific nitrogenous bases pair with each other through hydrogen bonds.
Identify that cytosine (C) is a pyrimidine base, and in DNA, it pairs with a purine base.
Remember that in DNA, cytosine (C) pairs specifically with guanine (G) through three hydrogen bonds.
Note that thymine (T) pairs with adenine (A), and uracil (U) is found in RNA, not DNA.
Conclude that the complementary base to cytosine (C) in DNA is guanine (G).
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