Genetic Genealogy SIG

Contact: Rodger Wolf, SIG Leader,
The purpose of the Genetic Genealogy Special Interest Group (SIG) is to meet informally monthly to discuss and learn about genetic genealogy. Topics include selecting the right DNA test, selecting a testing company, interpreting your DNA test results, and solving brick wall problems with DNA.
  • Meeting place: Brecon Room, Saline District Library, 555 N Maple Rd., Saline, Michigan (map)
  • Meeting time: Dates and times vary, please see the our event calendar
  • If you would like to be on our mailing list, please email Rodger Wolf.
  • Meetings are free and open to the public. Please consider joining GSWC for access to "member only downloads"
Genetics Basics (Courtesy of  Blaine T. and Debbie Parker Wayne. Genetic Genealogy in Practice)
  • Chromosome A very long double-helix of DNA found in the nucleus of a cell and organized with proteins; humans have twenty-­two pairs of autosomal chromosomes and one pair of sex chromosomes.
  • Autosomal DNA (atDNA)  Chromosomes 1 through 22, also called autosomes.
  • Mitochondrial DNA (mtDNA) DNA carried outside of the nucleus of a human cell and passed from a mother to all of her children; males inherit mtDNA from their mothers but do not pass it to their chil­dren, while females inherit mtDNA from their mothers and passit to their male and female children.
  • Y Chromosome DNA (Y-DNA)  DNA on the Y chromosome; a woman does not inherit Y­DNA; a man inherits one Y chromosome from his father and none from his mother. 
  • X Chromosome DNA (X-DNA)  DNA on the X chromosome; a woman inherits one X chro­mosome from her mother and one X chromosome from her father; a man inherits one X chromosome from his mother and none from his father 

File Downloads  Articles, glossaries, resources, and meeting minutes. (member-only access
updated: 23 Jan 18 jet.