Today’s episode of Research Like a Pro is about the Coverage Estimator tool at DNA Painter. We discuss the purpose of the tool, some ways to use it, and how to use it. We also share some examples of how we’ve used it. Nicole shares her Joanna West case and how the coverage estimator showed increased coverage as more test-takers were added. Diana shares how she is using the coverage estimator to track the coverage...
Today’s episode of Research Like a Pro is about pedigree collapse and its effect on DNA matching. We discuss the coefficient of relationship calculation and how that can help you estimate the expected amount of DNA two people should share based on the relationship in their trees. We talk about the Hopper case study with a DNA match with two individuals with multiple relationships and one of the test takers has pedigree collapse on the...
Today’s episode of Research Like a Pro is a case study of how increasing coverage of Barsheba Tharp and Joanna West, Nicole was able to confirm the hypothesis that Joanna was Barsheba’s mother. We talk about the challenges of working with DNA further back in time, but how adding additional test takers helps with that challenge. Transcript Nicole (1s): This is research Like a Pro episode 221 Autosomal DNA Coverage part two. Welcome to...
Today’s episode of Research Like a Pro is about autosomal DNA coverage. We define the term, discuss why it’s important, and share examples and formulas. Learn how you can find more relevant DNA matches when you include additional test takers who descend through unique child lines. Transcript Nicole (1s): This is Research Like a Pro episode 220 Autosomal DNA coverage, part one. Welcome to Research Like a Pro a Genealogy Podcast about taking your research...
If calculating coverage of your research subject sounds challenging, try using this coverage calculator! In my two previous posts about coverage, we talked about the concept of achieving better coverage of your research subject through gaining access to additional test results of their descendants. I talked about Paul Woodbury’s coverage formula and applied it to the Daniel Arnold case and Barsheba Tharp case. Read those posts here: Find More Ancestors with Autosomal DNA by Increasing...
In my last post about autosomal DNA coverage, “Find More Ancestors with Autosomal DNA by Increasing Coverage,” I discussed how testing multiple descendants of your research subject can help you find more relevant matches. I shared some examples of applying Paul Woodbury’s coverage formula and the Daniel Arnold project I’ve been working on. Today I have an example of how expanding the coverage of Barsheba Tharp helped solve the identity of her mother. Barsheba Tharp...
When using DNA test results to find evidence for a research subject’s parent, the typical method is to find DNA matches who are descendants of the hypothesized parent. You will only be able to find these matches if you actually inherited DNA from that ancestor. The more distant the ancestor, the less likely that you inherited very much DNA from that person. You are expected to inherit about: 1/4 of a grandparent’s DNA (25%) 1/8...
Today’s episode of Research Like a Pro is about setting up a web page to share with potential DNA test takers. Nicole talks about the Daniel Arnold project to find Daniel’s parents. Daniel was born 6 August 1806 and married Lydia Willey. We discuss autosomal DNA coverage, making living people in reports anonymous, and targeted testing of people from independent child lines. We also review the current research and clues pointing to Daniel’s parents. Transcript...
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