Multiple Choice
Do both prokaryotic and eukaryotic cells contain DNA as their genetic material?
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7. DNA and Chromosome Structure
DNA as the Genetic Material
Multiple Choice
In DNA, which component carries the genetic information that distinguishes one sequence from another?
A
The hydrogen bonds that hold complementary strands together
B
The phosphodiester bonds between nucleotides
C
The sugar-phosphate backbone structure
D
The linear sequence of nitrogenous bases (A, T, G, and C) along the strand
Verified step by step guidance1
Understand that DNA is composed of four main components: nitrogenous bases, sugar molecules, phosphate groups, and the bonds that connect these parts.
Recognize that the sugar-phosphate backbone (formed by phosphodiester bonds) provides structural support but does not carry genetic information.
Know that hydrogen bonds between complementary bases (A-T and G-C) stabilize the double helix but do not encode the sequence information themselves.
Focus on the linear sequence of nitrogenous bases (adenine, thymine, guanine, and cytosine) along one strand, as this sequence is what encodes genetic information.
Conclude that the unique order of these bases distinguishes one DNA sequence from another, thus carrying the genetic information.
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