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 31, 2020 | Blog, DNA Science
The unit of centiMorgans (cM) tells us how much DNA we share with a relative who, along with ourselves, has also had their DNA genotyped. The most popular charts for determining genetic relationships use cM. It has plenty of benefits and is one of the most used...
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 | Oct 23, 2020 | Blog, Probability and Statistics
A formula to improve your ability to estimate 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...
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