Family Tree DNA Forums

Family Tree DNA Forums (http://forums.familytreedna.com/index.php)
-   mtDNA - Genealogy Basics (http://forums.familytreedna.com/forumdisplay.php?f=210)
-   -   Would there be a different haplogroup? (http://forums.familytreedna.com/showthread.php?t=42794)

RebeccaR 30th December 2017 02:21 PM

Would there be a different haplogroup?
 
I had my Uncle tested and his Batch#798 full mtDNA results will come in soon.

I only match with him on my X chromosome at 23.88 cM. I share 1,677 cM with him overall.

Since we don't match so much on X, will he have the same haplogroup as my Mother (his Sister), who hasn't been tested?

Is there any benefit to having my Mother's mtDNA done?

J Honeychuck 30th December 2017 02:50 PM

Quote:

Originally Posted by RebeccaR (Post 447018)
I had my Uncle tested and his Batch#798 full mtDNA results will come in soon.

I only match with him on my X chromosome at 23.88 cM. I share 1,677 cM with him overall.

Since we don't match so much on X, will he have the same haplogroup as my Mother (his Sister), who hasn't been tested?

Is there any benefit to having my Mother's mtDNA done?

If your mother and your uncle were born of the same mother, they will have the same mtDNA haplogroup. And it will be the same as yours. I can't think of any reason to test your mother's mtDNA.

RebeccaR 30th December 2017 03:03 PM

Okay, thank you very much.

KATM 30th December 2017 05:29 PM

Quote:

Originally Posted by RebeccaR (Post 447018)
I had my Uncle tested and his Batch#798 full mtDNA results will come in soon.

I only match with him on my X chromosome at 23.88 cM. I share 1,677 cM with him overall.

Since we don't match so much on X, will he have the same haplogroup as my Mother (his Sister), who hasn't been tested?

Is there any benefit to having my Mother's mtDNA done?

RebeccaR, in the statement I made bold above, you seem to be equating the X chromosome with mtDNA. They are not the same. The X chromosome is included with autosomal testing (Family Finder at FTDNA), and is found in the nucleus of the cell. But mtDNA is not part of autosomal DNA; it comes from outside the nucleus, in the cytoplasm.

It is still true that siblings with the same mother will have the same mtDNA haplogroup, so J Honeychuck's advice is good.

mtDNA is passed from a mother to her children, but males do not pass it on. This means that mtDNA follows the direct maternal line, back from you to your mother, and with her brother to their mother, to her mother, etc.

The X chromosome does have a unique inheritance pattern, due to males having one X chromosome, and females having two. Louise Coakley's "X-DNA's helpful inheritance patterns" article is good to read, and has charts and links about the X chromosome. Also check out her article, "What types of DNA tests are available?" which has a good illustration of from where in the human cell each type of DNA comes.

Another good article is Roberta Estes' blog post, "X Matching and Mitochondrial DNA is Not the Same Thing."

You may also find the animations at Learn.Genetics for the four types of DNA to be worth watching.

RebeccaR 31st December 2017 06:07 PM

KATM,

Thank you so much for that valued information. I will study it some more. You're right that I was equating one with the other. I am learning with much needed help. Thank you.

KATM 31st December 2017 11:15 PM

You're welcome, and have a Happy New Year.


All times are GMT -5. The time now is 06:46 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.