6.1

DNA and RNA Structure

AP Biology

DNA and RNA Structure

Nucleotide structure

Nitrogenous bases

Base pairing rules (complementary base pairing)

DNA vs RNA

DNA double helix structure

Key features of the double helix

Antiparallel orientation

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Sugar-phosphate backbone

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Base pair interactions

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Types of RNA

Historical experiments

Griffith (1928) — Transformation

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Avery, MacLeod, McCarty (1944) — DNA is the transforming principle

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Hershey and Chase (1952) — Confirmation with bacteriophages

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DNA packaging

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Vocabulary