Question From where u4b originates and which are the roots?

[kakao1]

Hello to everyone, i already asked in another thread about R-L2. Now i'm curious about my mtdna, u4b, i did a 23andme test for see it. My mom is romanian but i saw is not so common this mtdna, can someone explain me what kind of mtdna is u4b and his story? Online i can't find a lot about this haplogroup.
Thank you so much

 

[MOESAN]

Ti begin with, do read the Eupedia 'genetics' observations about this mt haplogroup. And don't fear search on the web.

 

[kakao1]

Ti begin with, do read the Eupedia 'genetics' observations about this mt haplogroup. And don't fear search on the web.

But i saw u4b is very rare to find articles online, i can't find it so much

 

[Miguel]

U4 appeared in Eastern Europe during Prehistory.
We know it descends from U4'9. U9 is rare and has been found in Yemen, Ethiopia and Balochistan (a region in Iran and Pakistan).

It expanded to your country during the Early Bronze Age, through the Yamna culture in Eastern Europe (Southern Russia, Ukraine, Moldova)