{"id":331,"date":"2020-03-20T00:34:00","date_gmt":"2020-03-20T00:34:00","guid":{"rendered":"https:\/\/www.ireneeng.com\/?p=331"},"modified":"2020-06-08T18:45:06","modified_gmt":"2020-06-08T18:45:06","slug":"the-numbers-and-terms","status":"publish","type":"post","link":"https:\/\/www.ireneeng.com\/?p=331","title":{"rendered":"The numbers and terms"},"content":{"rendered":"

\"\"<\/a>One of the main reasons to perform a DNA test<\/a> is to confirm and find long lost relatives, whether you knew they existed or not. According to 23andme<\/a>, their “ability to detect first cousin relationships or closer is approximately 100%.<\/em><\/span>” The following are the types of relationships and the approximate predication rates:<\/p>\n

    \n
  1. 100%: identical twin<\/sup><\/li>\n
  2. 50%: father, mother, son daughter, brother, sister  <\/sup><\/li>\n
  3. 25%: half-bro\/sis, grandpa\/ma, grandson\/daughter, uncle, aunt, nephew niece<\/sup><\/li>\n
  4. 12.5%: 1st cousin, great-grandpa\/ma, great-grandson\/daughter, great-uncle\/aunt, great-nephew\/niece<\/sup><\/li>\n
  5. 3.125%: second cousin – same great-grandparents<\/sup><\/li>\n
  6. 0.781%: third cousin – great-great-grandparents<\/sup><\/li>\n
  7. 0.195%: fourth cousin – great-great-great-grandparents<\/sup><\/li>\n
  8. 0.05%: fifth cousin – gggggrandparents<\/sup><\/li>\n
  9. 0.0122%: sixth cousin – ggggggrandparents<\/sup><\/li>\n<\/ol>\n

    Finding genetic relatives link here<\/a> <\/sup><\/p>\n\n\n\n\n\n\n\n\n\n
    Cousin relationship<\/strong><\/td>\nProbability of detecting<\/strong><\/td>\n<\/tr>\n
    1st Cousin or closer<\/td>\n~100%<\/td>\n<\/tr>\n
    2nd Cousin<\/td>\n>99%<\/td>\n<\/tr>\n
    3rd Cousin<\/td>\n~90%<\/td>\n<\/tr>\n
    4th Cousin<\/td>\n~45%<\/td>\n<\/tr>\n
    5th Cousin<\/td>\n~15%<\/td>\n<\/tr>\n
    6th Cousin and beyond<\/td>\n<5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Percent DNA Shared by Relationship link here<\/a> <\/sup><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Relationship<\/strong><\/td>\nAverage % DNA Shared<\/strong><\/td>\nRange <\/strong>[1<\/a>]<\/sup><\/td>\n<\/tr>\n
    Identical Twin<\/td>\n100%<\/td>\nN\/A<\/td>\n<\/tr>\n
    Parent \/ Child
    \nFull Sibling<\/td>\n    		50%<\/td>\nVaries by specific relationship<\/td>\n<\/tr>\n
    Grandparent \/ Grandchild
    \nAunt \/ Uncle
    \nNiece \/ Nephew
    \nHalf Sibling<\/td>\n    		25%<\/td>\nVaries by specific relationship<\/td>\n<\/tr>\n
    1st Cousin<\/td>\n12.5%<\/td>\n7.31% – 13.8%<\/td>\n<\/tr>\n
    1st Cousin once removed<\/td>\n6.25%<\/td>\n3.3% – 8.51%<\/td>\n<\/tr>\n
    2nd Cousin<\/td>\n3.13%<\/td>\n2.85% – 5.04%<\/td>\n<\/tr>\n
    2nd Cousin once removed<\/td>\n1.5%<\/td>\n0.57% – 2.54%<\/td>\n<\/tr>\n
    3rd Cousin<\/td>\n0.78%<\/td>\n0.3% – 2.0%<\/td>\n<\/tr>\n
    4th Cousin<\/td>\n0.20%<\/td>\n0.07% – 0.5%<\/td>\n<\/tr>\n
    5th Cousin<\/td>\n0.05%<\/td>\nVariable<\/td>\n<\/tr>\n
    6th Cousin<\/td>\n0.01%<\/td>\nVariable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Once removed<\/em> means a generation difference, and twice removed<\/em> is a two-generation difference:<\/p>\n