Generally, a genealogical DNA test might use either autosomal STRs or autosomal SNPs. (STR's are Short Tandem Repeats; SNPs are single-nucleotide polymorphisms.) However, testing companies do not currently offer autosomal STRs tests that use enough STR markers for genealogy.here are three types of genealogical DNA tests, autosomal (atDNA), mitochondrial DNA (mtDNA), and Y-Chromosome (Y-DNA). Autosomal tests for all ancestry. Y-DNA tests a male along his direct paternal line.
Definition of drifter for English Language Learners. : a person who moves from one place or job to another without a purpose or plan.
Definition of floater. 1  1a : one that floatsb : a person who floats something. 2  2 : a person who votes illegally in various polling places. 3  3a : a person without a permanent residence or regular employmentb : a worker who moves from job to job; especially : one without fixed duties.