In the microbial world,an "operational taxonomic unit" is defined as any group of microbes that share at least __________ sequence identity of their SSU rRNA gene.

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In the microbial world, an operational taxonomic unit (OTU) is defined as any group of microbes that share at least 97% sequence identity of their SSU rRNA gene. This is a commonly used threshold for defining microbial species and for assigning sequences to existing taxonomic groups.

In the Microbial World,an "Operational Taxonomic Unit" Is Defined as Any