Class: “Intro to Genetic and DNA Testing for Genealogy” with




This class will include two presentations.

DNA testing provides several tests that can help expand your genealogy research. The first hour will discuss how the different tests can be used as additional tools in your genealogy toolbox. We will cover the main testing companies and the main tests used in genealogy research. We will discuss the best tests to use to solve different genealogy challenges.

DNA is another type of data record that is useful in genealogy. Just like any record, it is important to understand the record in order to use if effectively. You don’t have to be a scientist to use DNA for genealogy, but it is helpful to have a basic understanding of the science in order to use it more effectively. Tammie Gregori will explain DNA in terms that will be understandable to genealogists. Understanding the way DNA is copied in the cells of the body and passed on to the next generation is helpful in order to get the most use out of your DNA results. She will talk about chromosomes, genes, mutations, and recombination. The words used in genetic genealogy such as markers, genetic distance, and centiMorgans will be explained. The types of DNA testing (autosomal, Y-DNA, and mitochondrial DNA) will be compared and contrasted, and she will show examples of how to use them in your genealogy research.

Time will be available for questions and answers help everyone understand how they can use DNA testing and Genetic genealogy to further their Genealogy research.

R. Glenn York

Glenn was born in Iowa and grew up all over the Midwest.

After 21 years in the Air Force he moved to Ft Collins in 1992. After a career was in technology working in electronics, computers, and managing large computer security programs Glenn retired in 2016.

Most of his ancestors came to colonial America from western Europe and the UK. Over the past 300 plus years his ancestors migrated west through Ohio, Indiana, and Iowa to homestead in Kansas, Nebraska, and Colorado.

Glenn has combined technology and genealogy for over 30 years. He started doing genealogy about 1983, when he was stationed near Washington DC learning genealogy in the Library of Congress, National Archives, DAR library, and Suitland Records center. He has researched in numerous state, county, and local facilities throughout the mid-west.

His current focus is on genetic genealogy. He took his first DNA test in 2006. He now manages DNA tests with four testing companies for over 25 different family members. He has attended many presentations on genetic genealogy including Roots Tech 2016 and 2017 and local Genealogical societies. He completed the DNA Boot Camp: Practical Applications at the Salt Lake Institute of Genealogy in January 2017.

He currently leads the monthly DNA study group for the Larimer County Genealogical Society. He has also got involved with unknown parentage searches and has helped an adoptee find her birth mother and a Vietnam “war baby” find her father.

Tammie Gregori

Tammie Gregori began doing genealogy in January 2014 and joined the Larimer County Genealogical Society soon after. Genealogy has become her passion and favorite pastime.

She was born and raised in Iowa, in a Quaker family. She received a Bachelor’s Degree from Iowa State University in Botany and a Master’s Degree from the University of Minnesota in Plant Breeding and Genetics. She worked for a time in the Recombinant DNA Lab at the University of Iowa doing genetic research. Some of that research resulted in a patent from which she enjoyed royalties for 17 years. She and her husband and two children moved to Fort Collins in 1991. It has been her pleasure to combine her interest in genetics with her interest in genealogy. She and most of her family have done DNA testing at all three major companies. In January of this year, she attended the Salt Lake Institute of Genealogy week-long Course: DNA Boot Camp: Practical Application. She believes that understanding the science behind the DNA testing will help you get more out of your results.



Visitors are welcome at all meetings

Questions?  Contact  President Gary Davis at





Registration is closed for this event.