Multiple Choice
In the context of DNA structure, which nitrogenous base is not found in DNA?
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, which type of bond primarily holds the two strands together across the helix (between complementary bases)?
A
Phosphodiester covalent bonds between nucleotides in opposite strands
B
Glycosidic bonds between the sugar and phosphate groups of opposite strands
C
Peptide bonds between nitrogenous bases
D
Hydrogen bonds between complementary base pairs
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