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DNA Articles and Presentations
This DNA page lists many DNA presentations that include what DNA is and how it works, how to analyze your DNA results, and other very useful articles, presentations, and reference charts and diagrams.
DNA Articles by Lee Macklin
DNA Ethnicity Estimations
Describes the two-step process used by DNA testing companies to determine where your ancestors came from. Discusses the importance of Reference Panels, group probabilities, and DNA segment comparisons.
AncestryDNA - Initial Steps
Describes the important steps you need to do when taking the AncestryDNA test to get the most information from your DNA results.
DNA Presentations by Lee Macklin
AncestryDNA's DNA Regions
AncestryDNA's DNA regions are areas around the world where your DNA is similar to people who have lived there for a long time. These regions can help you learn where your ancestors likely lived and find records of them. The ancestral region reference panel is is made up of people whose families have long-standing, documented roots in a specific area. We compare your DNA to this reference panel to determine your possible ancestry from hundreds up to a thousand years ago.
AncestryDNA's Ancestral Journeys
Ancestral journeys on AncestryDNA are maps that show where your relatives may have lived and moved in the past 300 years. They can pinpoint locations down to the county or town level. Ancestral journeys help you learn about where your relatives might have lived and moved in the past 300 years. Journeys use your DNA matches to connect you with others who come from a common group of ancestor
AncestryDNA's ThruLines
ThruLines is a wonderful app that integrates your DNA results with tree views that show exactly how your DNA matches are related to you. It is a great way to discover new ancestors to fill in your tree. You can see if DNA supports the positions of people in your tree and it can help solve adoptions and half-cousin situations.
Cousins Genealogy + DNA
This presentation defines and analyzes the different types of cousin relationships. It describes in detail the two most important concepts: Common Ancestors and Degrees of Separation. It defines the amount of DNA you share with each type of cousin relationship: Full Cousins, Half-Cousins, Removed Cousins, and Double Cousins.
Analyzing Your AncestryDNA Results
This presentation describes in detail how to interpret your AncestryDNA results. It presents the key concepts, then uses actual examples to illustrate each of the important steps to get the most out of your test results. Shows how to combine your genealogy work with DNA to get the best results. Provides charts showing the amounts of DNA you share with each type of relative. Describes all the main features that AncestryDNA apps offer.
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DNA Misconceptions
by Kelli Bergheimer
Sometimes our misconceptions can lead us astray! To make accurate conclusions about the genetic relationships to our matches, we need to make sure we set aside confirmation bias and our assumptions. Kelli discusses many of the key misconceptions and provides links to detailed answers.
Links to DNA Resources on the Internet
cM Explainer (MyHeritage)
Ethnicities Map (MyHeritage)
Chromosome Browser (MyHeritage)
DNA Auto Clusters (MyHeritage)
DNA Relatives (23andMe)
Paternal Haplogroups (23andMe)
Maternal Haplogroups (23andMe)
Finding Biological Family (AncestryDNA)
ThruLines (AncestryDNA)
Chromosome Painter (AncestryDNA)
Ethnicity Inheritance (AncestryDNA)
DNA Compare (AncestryDNA)
Y-DNA, mtDNA, and Autosomal DNA Tests (AncestryDNA)
Health Service Reports (23andMe)
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