Does 439 cM shared suggest half uncle rather than half first cousin?

From The Shared cM Project 3.0 tool v4 for 439 cM the possibility of such a match being a half first cousin (Half 1C) is far greater than it being a half uncle.

How many cM would a half uncle share?

According to the relationship chart from Blaine Bettinger’s Shared cM Project (2017), the 99% range found for a half aunt/uncle was 500-1446 cM.

How many cM do you share with a half first cousin?

The amount of DNA shared with a half-first cousin falls between 215-650 cMs (centimorgans). Any amount less than 515 cMs signifies an almost certain half-first cousin relationship, since the DNA shared between two full-first cousins should fall between 515-1300 cMs, approximately.

How many centiMorgans do half first cousins once removed share?

23andMe

Relationship Range in percentages Range in centiMorgans
1st cousin once removed; half first cousin 2% – 11.5% 149 cM – 855 cM
2nd cousin 2% – 6% 149 cM – 446 cM
2nd cousin once removed; Half 2nd cousin 0.6% – 2.5% 45 cM – 186 cM
3rd cousin 0% – 2.2% 0 – 164 cM

What would a half first cousin be?

Cousins who share one grandparent because their parents are half siblings are half-first-cousins. Cousins who share a set of great-grandparents because their parents are first cousins and their grandparents are siblings are second cousins.

Can first cousins share 25% DNA?

Instead of the usual 12.5% of DNA that first cousins share, the two of you share around 25% of your DNA. This is the same amount that you would share with a grandparent, a half sibling or an aunt or uncle.

What does 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 a half sibling show up as a first cousin?

Can a half-sibling show up as a cousin? While the amount of DNA you share is different between half-siblings and cousins, your half-sibling still may show up as a “first cousin” because your centimorgans may be within the 1,300 range.

How much DNA do I share with my half 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%

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