23andMe uses genotyping. IANAMB, but I think that means they run a series of assays each of which "examines" a small PART of the genome to look for something ve

23andMe uses genotyping. IANAMB, but I think that means they run a series of assays each of which "examines" a small PART of the genome to look for something very specific. As part of their process, however, they could extract the DNA and keep a sample frozen for later assays or even full genome sequencing but I don't know if they do that. https://customercare.23andme.com/hc/en-us/articles/202904600-What-is-the-difference-between-genotyping-and-sequencing- https://customercare.23andme.com/hc/en-us/articles/202904600...