Comparing a conserved ribosomal gene to identify and classify bacteria and archaea.
The 16S gene has conserved regions for primer binding and variable regions for identification. Carl Woese used rRNA to define three domains. Operational taxonomic units or ASVs are used in analysis.
16S sequencing gives relative abundance but not function. PCR bias can distort. Resolution is often to genus level.
Key idea: ribosomal genes serve as molecular chronometers.
Comparing a conserved ribosomal gene to identify and classify bacteria and archaea.
16S rRNA Sequencing is one of the 54 topics in Microbiology. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Bacterial Genetics, Metagenomics, Bacterial Chemotaxis.
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Work through the Beginner topics in Microbiology first, such as Microorganisms, Bacteria, Archaea, then return to 16S rRNA Sequencing. Advanced topics assume the Intermediate vocabulary.
The closest topics to 16S rRNA Sequencing are Bacterial Genetics, Metagenomics, Bacterial Chemotaxis, Quorum Sensing. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for 16S rRNA Sequencing. To practise the whole of Microbiology, use the Microbiology quiz.
16S rRNA Sequencing: Comparing a conserved ribosomal gene to identify and classify bacteria and archaea. Bacterial Genetics: Bacteria change genetically through mutation and by exchanging DNA by transformation, transduction and conjugation. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Bacterial Genetics and explain the difference aloud. Finally, take the Microbiology quiz and come back to this page for any question you miss.
Bacteria change genetically through mutation and by exchanging DNA by transformation, transduction and conjugation.
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