Relationship to DNA match who may share my mother with my great-uncle

How much DNA do I share with my great great-uncle?

Average Percent DNA Shared Between Relatives

Relationship Average % DNA Shared
Full Sibling 50%
Grandparent / Grandchild Aunt / Uncle Niece / Nephew Half Sibling 25%
1st Cousin Great-grandparent Great-grandchild Great-Uncle / Aunt Great Nephew / Niece 12.5%
1st Cousin once removed Half first cousin 6.25%

Do you share DNA with your great-uncle?

Our great aunts and uncles are closely related, and therefore must share DNA with us – even if they were half-siblings to our grandparents. With the knowledge that you will absolutely, always share DNA with a great-uncle, it is important to acknowledge that there is a wide range of how much DNA you will share.

Does AncestryDNA match with relatives?

Many of your ancestors passed down their DNA to you. And they also passed much of that same DNA to your cousins and other family members. That’s why DNA matching can connect you with other family members and act as a source of validation and discovery for your genealogical research.

How much DNA do I share with my maternal uncle?

A person will share between 1300 and 2300 centimorgans with their full aunt or uncle. Measured in percentages, we expect that an individual will share approximately between 19-33% of their DNA with these relatives.

What does a 25% DNA match mean?

Centimorgans (cM) are units of genetic linkage between two given individuals. For example, if you share 1800 cM with an individual, that means you share around 25% of your DNA with them. A strong match will have around 200 cM or more.

Can you share DNA and not be related?

Yes, it is possible to share a small amount of DNA with someone and not be related. In other words, it’s possible to share genetic material and not share a common ancestor or any identifiable genealogical connection.

What is a maternal great uncle?

Here the great uncle is still your grandpa’s brother but it is on the maternal side of the family. In other words, he is your mother’s father’s brother. Since you are related through your mother, you do not get the white Y from her side of the family.

How much DNA do you inherit from your great grandparents?

So for a great, great, great grandparent, the probability that you haven’t inherited any DNA from them is 0.01%. Or in other words, a 1 in 10,000 chance. Or to flip it around, there’s a 99.99% chance you have a DNA relationship with them!

Related Post