This tag should be used on all DNA-related posts. It could be accompanied by other tags for more specific DNA topics, including autosomal, mitochondrial, x-chromosome, y-chromosome, dna_confirmation, gedmatch, triangulation, tags for specific testing companies, etc. This is the principal tag of the DNA project: https://www.wikitree.com/wiki/Project:DNA. Follow this tag if you want DNA-related updates.