Scelta multipla
Which term describes a sequence of DNA that codes for a protein and thus determines a trait?
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7. DNA and Chromosome Structure
DNA as the Genetic Material
Scelta multipla
In DNA, genetic information is primarily encoded by which feature of the molecule?
A
The sequence (order) of nucleotide bases along the DNA strand
B
The sugar-phosphate backbone composition (deoxyribose and phosphate)
C
The diameter and uniform width of the double helix
D
The number of hydrogen bonds per base pair regardless of base identity
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Understand that DNA is composed of four types of nucleotide bases: adenine (A), thymine (T), cytosine (C), and guanine (G).
Recognize that the sugar-phosphate backbone provides structural support but does not encode genetic information.
Recall that the double helix's diameter and uniform width are structural features important for stability, not for encoding information.
Focus on the sequence or order of the nucleotide bases along the DNA strand, as this sequence determines the genetic code.
Conclude that the genetic information is encoded by the specific order of nucleotide bases, which directs the synthesis of proteins and regulates cellular functions.
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