BirthU5a1 was born abt 25000 YPB. 
WebIntro(Research)Check here for the defining markers for U5a1.
The U5 volunteer project admin adds:
The earliest branching of U5 is its two subclades U5a and U5b that have been dated to about 27,000 years ago by Soares et al., while Behar et al. have a younger estimate of about 22,000 years. U5a is defined by two additional mutations A14793G and C16256T, while U5b is defined by three additional mutations C150T, A7768G and T14182C.
ChartsHaplogroups of those with mtDNA tests
Last Edited18 Mar 2015

Sub haplogroups/tested lineages/testees