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Jenna M. Lang edited Building a 16S rDNA Phylogenetic Tree.md
almost 10 years ago
Commit id: 7700a8521a6802db7e785af2b79fcdad95bc4c7c
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insect. If it has hard outer wings folded over its back, you might guess that it's some kind of beetle. If it also had antler-style horns on its head, you might
guess that it's some kind of stag beetle. If you don't have enough information available to guess what kind of stag beetle you have, then you have reached the
limit of *taxonomic resolution* for your creature.
With an unknown microbial species, the best way to identify it is to sequence one of its genes (most people
use the 16S rRNA gene) and ask what _it_ most looks like. With animal classification, the key features to examine are things like legs and wings and horns; with microbial
classification, the key features to examine are the nucleotides in different positions in a DNA sequence. Fortunately, we have computer programs to help us make