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28.2 Base Pairing in DNA: The Watson–Crick Model

chapter 28 bimolecules nuecliec acids

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Page 1: chapter 28 bimolecules nuecliec acids

28.2 Base Pairing in DNA: The Watson–Crick Model

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• Replication—the process by which identical copies of DNA are made so that information can be preserved and handed down to off spring

• Transcription—the process by which the genetic messages are read and carried out of the cell nucleus to ribosomes, where protein synthesis occurs

• Translation—the process by which the genetic messages are decoded and used to synthesize proteins

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28.3 Replication of DNA

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• ′ → ′

• ′ ′

• ′ ′•• ′ ′

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28.4 Transcription of DNA

• uracil rather than thymine

• All RNA molecules are much smaller than DNA, and all remain single stranded rather than double-stranded.

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′ ′

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28.5 Translation of RNA: Protein Biosynthesis

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