#My family tree opt out software

Which is it, Bob? Are you Mary’s father or her son? Step 3: Filter the possible relationships based on other factors Joe could share great-great grandparents with Mary, and still not have inherited any shared segments of DNA. Joe has no matches with either Mary or Bob, so we can safely say that he does not share a grandparent with either of them.īut we couldn’t say, for example, that this is a paternal/maternal divide for you. So, Bob is either Mary’s father or her son. Now let’s consider the possible relationships between them.Ģ3andMe knows that Bob shares 49% of DNA with Mary. Here is a crude cluster diagram of Mary, Bob, and Joe: I assume that the 23andMe algorithm arranges the chosen DNA relatives into groups of overlapping shared DNA. Joe shares 23% of DNA with you but is not on the Relatives in Common lists of Mary or Bob. Bob shares 9% of DNA with you, and 49% with Mary. When you look at Mary’s list of Relatives in Common, you see Bob at the top of the list. Yes, this is a lot of DNA, but it’s easier to work this through with a more obvious relationship. Let’s say that you share 20% of DNA with Mary, a DNA relative that you haven’t figured out yet. How does it choose which ones? I’ll address that in a later section.įor now, we’ll work through an example with Mary, Bob, and Joe. The algorithm chooses one or more of your DNA matches to work with. This is my take on a high-level breakdown of how your family tree is generated… 23andMe has not divulged much technical detail, but I will infer some broader aspects of the process. The 23andMe tree is created by an algorithm that analyses how much DNA is shared between you and a set of your DNA relatives. You will likely need to zoom in and out to work with particular areas. Unlike traditional family tree software, the entire representation is displayed on a single page. The thinner lines represent collateral lines within your tree: the descendants of your great-aunts, for example. The thick golden lines represent direct pedigree relationships: parents, grandparents, and so forth. Here’s an excerpt of a tree which has been edited by the DNA tester:

#My family tree opt out software

If Ancestry’s tree software is known for the green leaf icon, then 23andMe may become known for their wavy lines. If you opt in, 23andMe calculates your genetic tree.

Adoptees, Unknown Parentage, and the Genetic TreeĪ 23andMe family tree is a graphical representation of the potential relationships between you and your DNA relatives.

How Do You Recalculate Your 23andMe Family Tree?.

How Do You Get DNA Relatives Calculated Into Your Tree?.

Which DNA Relatives Are Automatically Added to Your Tree?.Can You Export or Share your 23andMe Family Tree?.Adding Family Members to Your 23andMe Family Tree.