First Name:  Last Name: 
[Advanced Search]  [Surnames]







Smith Official DNA & One Name Study Project
Smith DNA Official Project-All Locations-A FamilyTreeDNA Project



Come Join the Smith Official DNA Project at FamilyTreeDNA with a DNA Kit!

 

  Guestbook ALL Posts  Get a Gravatar pic for post           Login Guestbook

Does both a brother and sister have momís mtDNA?

Got a question on exactly how mtDNA gets passed down.First, here is a photo of how this works with Smith. Note the 2 different surnames. On the left the female Smith marries a male Jones. Both Jones sons and daughters get a copy of mom’s mtdna. However, the sons do not pass down mtdna, only the daughters. On the Smith side, the male Smith is married to a female Jones. The female Jones passes down mtDNA to both Smith sons and daughters (the male Smith does not pass down mtDNA). When son Smith (right)  marries daughter Jones (left), the two resulting children get copies of mother JONES mtdna. ON the right, the 2 Smith daughters, regardless of which male they marry, will give a copy of their mtDNA to resulting children.

I also think this is a terrific site that not only explains it and has a graph but has a practical application (Missing POWs)  Go to this page and click on DNA Explained

The basic idea is that mtdna gets passed down by the female. If a mom has 2 kids, one son and one daughter, both get the mtdna, thus they both should have the same mtDNA haplogroup. However, ONLY the daughter can pass it down to her children, the son does not. Thus, if you are talking about a current generation, both the son and daughter should match mtdna haplogroup but if a generation before that (grandmother, uncle, aunt, etc), the children of the uncle (nieces, nephews)  would NOT get that mtDNA passed down.

(6/4/2014 Views 424)
smithsworldwide

Reply  

Add a Reply


To find your specific DNA Kit information, enter your DNA number in the search box
at the top left of the page click SEARCH

For the Smith Official DNA Project (All Locations) a minimum of 25, or better, 37 markers, is strongly recommended. Many times one can appear to match other kits but the match falls apart after 12 markers. We do not attempt to match kits into groups on less than 25 with the exception of a strong paper trail or known family kinship with another tester.

 

Smith Official DNA Project (All Locations)  data is copyrighted, in aggregate,  to this project, a FamilyTreeDNA Project
Any other aggregate use is not permitted, without the expression permission of the administrators of this project.
We appreciate links to the Smiths Official DNA -All Locations project, but do ask that site links, particularly when there is potential confusion, point to the
Join page at FamilyTreeDNA for the Smith Official All DNA Project, that you clearly indicate that the link goes to the Smith Official DNA  Project (All Locations)  and that our project data not be sent out via spreadsheet, email or other means without our (admins on the Smith Official DNA Project) express permission.  The Smith Official DNA Project at FamilyTreeDNA is not affiliated with strictly regional projects Smith Connections-Northeastern which is a FamilyTree regional project for those with connections in specific northeastern US states such as NY/CT, etc  nor with Smiths of Abbeville SC,. We are the official Smith DNA project for ALL Smith Schmidt Smyth Smythe etc of ALL Locations and include all northeastern US states as well as Abbeville SC Smiths and all other locations in the world. Thank you.