How to deal with the NAs after mapping to silva?

I have just a question;
How to deal with the NAs after mapping to silva?
If could please provide some insights about it?
Thanks

HI @MarwaTawfik,

By "NAs" I assume you are referring to lack of classification at a particular taxonomic rank?

Please provide more information:

  • Which variable region are you using? V1V3? V4? other?
  • How are you trying to classify your sequences? vsearch, BLAST, naive bayes?
  • Which version of QIIME 2 and SILVA db are you using?

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