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Chapter 15: Genes and Proteins

Since the rediscovery of Mendel’s work in 1900, the definition of the gene has progressed from an abstract unit of heredity to a tangible molecular entity capable of replication, expression, and mutation (Figure 15.1).

1. Chapter 15: Genes and Proteins

Chapter 15: Genes and Proteins

2. Key terms check

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modification added to the 5' end of pre-mRNAs to protect mRNA from degradation and assist translation

3. Key terms check

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enzyme that “charges” tRNA molecules by catalyzing a bond between the tRNA and a corresponding amino acid

4. Key terms check

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three-nucleotide sequence in a tRNA molecule that corresponds to an mRNA codon

5. Key terms check

Which key term matches this definition?

(GGCCAATCT) essential eukaryotic promoter sequence involved in binding transcription factors

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