Reconstructing the evolution of a case of mimicry within the same species, however, is relatively simple, requiring detailed knowledge of but one rather narrow taxonomic unit.
Soils are encountered on the landscape as groups of similar pedons, called polypedons, that contain sufficient area to qualify as a taxonomic unit.
Molecular operational taxonomic unit.
Then the OTU was annotated with taxonomic unit.
The resulting representative DNA sequences and the corresponding RFLP banding patterns, respectively, were defined as an operational taxonomic unit (OTU).
Sequences demonstrating greater than or equal to 97% similarity were assigned to the same operational taxonomic unit (OTU).
If single nucleotide polymorphisms occurred between clones from the same operational taxonomic unit (OTU), chromatograms were rechecked to confirm these.
A taxon presence in a sample was accepted, if there were at least five reads binned to this taxonomic unit.
The sequences displaying less than 2% nucleotide dissimilarities with each other were grouped into the different operational taxonomic unit (OTU).
The taxonomic unit annotation information of the OTUs was used to generate OTU abundance profiles for all the samples.
Clone library analysis indicated the persistence of one operational taxonomic unit (OTU) over time at one site.
