Multiple Choice
In DNA structure, the backbone of the DNA molecule is primarily made up of which components?
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7. DNA and Chromosome Structure
DNA Structure
Multiple Choice
In DNA, which nitrogenous base pairs with adenine?
A
Uracil
B
Guanine
C
Thymine
D
Cytosine
Verified step by step guidance1
Recall the base pairing rules in DNA, which are based on complementary nitrogenous bases.
Understand that adenine (A) pairs with thymine (T) in DNA through two hydrogen bonds.
Note that guanine (G) pairs with cytosine (C) in DNA, forming three hydrogen bonds.
Recognize that uracil (U) is found in RNA and pairs with adenine there, but not in DNA.
Therefore, identify thymine as the nitrogenous base that pairs with adenine in DNA.
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