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Multiple Choice
Which feature of the DNA double helix model best illustrates how biological information is coded in a DNA molecule?
A
The presence of a sugar-phosphate backbone
B
The antiparallel orientation of the two strands
C
The specific sequence of nitrogenous bases along the strands
D
The uniform diameter of the double helix
Verified step by step guidance
1
Understand that the DNA double helix consists of two strands made up of a sugar-phosphate backbone and nitrogenous bases.
Recognize that the sugar-phosphate backbone provides structural support but does not directly encode genetic information.
Note that the antiparallel orientation of the strands is important for replication and enzymatic processes but is not the direct code for biological information.
Focus on the sequence of nitrogenous bases (adenine, thymine, cytosine, guanine) along the strands, as this sequence forms the genetic code.
Conclude that the specific order of these bases is what stores and transmits biological information in DNA.