Chapter 15 Lecture Enrichment Ideas
Emphasize how the study of genetics has expanded to become the study of the biochemistry of genetic processes, the process of DNA replication, the transfer of information to a usable form in building proteins, and the use of proteins (often as enzymes) to produce the phenotype of the individual.
Explain how the link between the DNA nucleotide sequence and the amino acid sequence of proteins has led to the current knowledge of what happens in a cell and how to "fix it" through genetic engineering. This prepares for the coverage of the material in the next few chapters.
Follow the progression of scientific understanding of this material from the one geneone enzyme hypothesis to the one geneone polypeptide hypothesis, and take the next step to the one geneone gene product hypothesis that would include tRNA and rRNA as gene products. These still do not fit the one geneone polypeptide hypothesis, since they do not involve polypeptides and yet are usable structures defined by DNA gene sequences.
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