Most people know that 28.35 grams is 1 Ounce, but that is the avoirdupois Ounce, the common method to weigh groceries etc. When you are weighing precious metals or stones, jewellers use another method called Troy in which 31.103 grams is 1 Troy Ounce.So remember:ost people know that 28.35 grams is 1 Ounce, but that is the avoirdupois Ounce, the common method to weigh groceries etc. When you are weighing precious metals or stones, jewellers use another method called Troy in which 31.103 grams is 1 Troy Ounce. So remember:
Used For: mtDNA tests can be used to test your direct maternal lineage - your mother, your mother's mother, your mother's mother's mother, etc. mtDNA mutates much more slowly than Y-DNA, so it is really only useful for determining distant maternal ancestry. Available To: Everyone.
Autosomal DNA testing, remember, is the kind of test that works across genders to locate relatives â cousins â from all parts of your family tree. Thatâs in contrast to YDNA testing, which only men can do and which looks at the direct paternal line, or mitochondrial DNA testing, which looks at the direct maternal line. If youâre interested if YDNA or mtDNA testing, Family Tree DNA is the only game in town.