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.
Recent Examples of drifter from the Web. 1  Write a novel about a magical world filled with one or more of the following: dying high school students, bondage enthusiasts, murderous wives, or drifters who solve crimes. 2  On national television, the Communist regime portrayed him as a filthy scoundrel, a drifter, an imbecile.