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Chapter 9: Molecular Biology

The three letters “DNA” have now become associated with crime solving, paternity testing, human identification, and genetic testing.

1. Chapter 9: Molecular Biology

Chapter 9: Molecular Biology

2. Key terms check

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a post-transcriptional gene regulation mechanism in eukaryotes in which multiple protein products are produced by a single gene through alternative splicing combinations of the RNA transcript

3. Key terms check

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three consecutive nucleotides in mRNA that specify the addition of a specific amino acid or the release of a polypeptide chain during translation

4. Key terms check

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a five-carbon sugar molecule with a hydrogen atom rather than a hydroxyl group in the 2' position; the sugar component of DNA nucleotides

5. Key terms check

Which key term matches this definition?

the enzyme that catalyzes the joining of DNA fragments together

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