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| Unit 2: Demos |
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Promoter strength (3c) Transposons: Spam from the Dark Ages (optional) Recombinant DNA and gene cloning PCR (supplementary): What the heck is PCR? Gel electrophoresis (supplementary): Genome
mapping (supplementary) DNA profiling (supplementary): Disclosure
of variation - Now that the sequence of the human genome
is almost complete, the human genomics community is turning its
attention towards what, genetically speaking, makes people different. Gene Therapy Genetic engineering: Flower
Power Takes on Land Mines (story with image) |
The Origin of tRNA and rRNA It should be evident that all types of RNA are transcribed from a DNA template. Although strands of transfer and ribosomal RNA are never translated into polypeptides, they are synthesized from nuclear (and mitochondrial) DNA in the same manner as messenger RNA. Yes, there are tRNA and rRNA genes! The latter are grouped into a mass called the “nucleolus,” which is often visible when stained. Roughly 300 rRNA and 1300 tRNA genes are known to exist in the human genome.
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