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Multiple Choice
Which of the following best describes the arrangement of genetic information in a DNA molecule?
A
A single-stranded linear sequence of nucleotides
B
A double helix structure with complementary base pairing
C
A triple helix structure with random base pairing
D
A circular structure with identical base pairing
Verified step by step guidance
1
Understand that DNA is the molecule that carries genetic information in living organisms.
Recognize that DNA is composed of two strands that form a double helix structure.
Identify that the strands in the DNA double helix are held together by complementary base pairing, where adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
Eliminate options that do not describe the double helix structure or involve incorrect base pairing, such as single-stranded or triple helix structures.
Conclude that the correct description of the arrangement of genetic information in a DNA molecule is a double helix structure with complementary base pairing.