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Code for an Algorithm to Find Your DNA Segments Based on Matches at GEDmatch

by Brit Nicholson | Dec 28, 2020 | DNA Code

I’ve written two Python algorithms that I describe in this article. The algorithm below works for downloaded segment-level match files from GEDmatch. The other algorithm, found here, is for match files downloaded from MyHeritage. # Copyright (c) 2020 Brit...

Improving Upon the AYPR Tool at GEDmatch

by Brit Nicholson | Oct 23, 2020 | Blog, DNA Science, Probability and Statistics

A formula to improve the estimation of the genetic relationship between two parents GEDmatch has had a tool called “Are Your Parents Related” (AYPR) for a few years now. The tool is helpful and easy to use. Some have argued that this information shouldn’t be...

No Recombination of X Chromosomes

by Brit Nicholson | Sep 29, 2020 | Blog, Probability and Statistics

What’s the probability that two children share one whole copy of the X chromosome without sharing a father? I’ve made an X chromosome model that predicts shared X DNA percentages and ranges for various ancestors, but I haven’t yet calculated ranges...

DNA Clusters in Gephi Using Data from GEDmatch

by Brit Nicholson | Aug 19, 2020 | Blog, DNA Science

Update, 3 March 2020: When I finally thought to share this information, I found out that I wasn’t the only person to have ever tried it. Still, I was encouraged to quickly finish writing up my methodology, as there weren’t any other instructions available....

An Algorithm to Find Your Chromosome Segments Based on DNA Matches

by Brit Nicholson | May 18, 2020 | Blog, DNA Science

How to automatically identify your most important DNA matches I recently had this idea for a project in Python that could save me a lot of work: What if a computer program could identify your most important DNA relatives? I was sure that the results wouldn’t be...
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Recent Posts

  • X-DNA is usually more recent than autosomal DNA
  • Double Cousin Relationship Predictions from Ped-sim
  • A New Option to Include X-DNA in Relationship Predictions

Recent Comments

  • Shanda Kerschner on New Feature: Relationship Predictions at GEDmatch
  • Brit Nicholson on Double Cousin Relationship Predictions from Ped-sim
  • Brit Nicholson on Code for an Algorithm to Find Your DNA Segments Based on MyHeritage DNA Matches
  • Julie Kelts on Code for an Algorithm to Find Your DNA Segments Based on MyHeritage DNA Matches
  • Jamie Cox on Double Cousin Relationship Predictions from Ped-sim

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