17: RNA processing
- Page ID
- 42841
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- 17.1: Details of Eukaryotic mRNA Processing
- Eukaryotic mRNA primary transcripts undergo extensive processing, including splicing, capping and, polyadenylation. The steps described here are considered in order of (sometimes overlapping!) occurrence. We begin with splicing, an mRNA phenomenon.
- 17.2: Gene Expression- Transcription
- Organisms such as plants and animals have tens of thousands of genes. The impact that a single gene’s information can have on an organism, however, is tremendous. Furthermore, organisms have all their genes in each of their cells, but they only need to use the information from a subset of these genes, depending on the type of cell and the cell’s stage of development. Therefore, the key to gene function is controlling its expression.