by Brit Nicholson | Jan 5, 2021 | Blog, DNA Science
People often ask how their DNA match with a cousin will be inflated if they have a double relationship with that cousin. Some helpful people have offered that you can look up shared averages and ranges for certain relationships and double all of them, or for two...
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...
by Brit Nicholson | Dec 1, 2020 | Blog, Probability and Statistics
Using very simple math to get the most out of multiple kits. Many genetic genealogy enthusiasts have their own DNA genotyped as well as some of their siblings. As the enthusiast of your family, you might have access to all of these kits. Or, if they’re all on...
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...
by Brit Nicholson | Feb 14, 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 MyHeritage. The other algorithm, found here, is for match files downloaded from GEDmatch. # Copyright (c) 2020 Brit...
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