Multiple Choice
In DNA structure, a nucleotide of DNA may contain which of the following components?
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, what holds the two antiparallel strands together?
A
Ionic bonds between the phosphate groups on opposite strands
B
Covalent phosphodiester bonds between bases across the two strands
C
Hydrogen bonds between complementary nitrogenous bases (A–T and G–C)
D
Peptide bonds formed between deoxyribose sugars on opposite strands
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