QUOTE(DearCoolZ @ Mar 2 2006, 08:31 PM) [snapback]4792827[/snapback]
southern chinese are basically the immigrants from the north a thousands years ago,along the way,they may have mixed with some local yues,but majority of southern chinese are HANS.
shouldn't southern chinese closely related to northern chinese than vietnamese

BTW: Ancient vietnamese might have looked different from modern vietnamese due to thousand years of chinese rule(mixed with chinese) and recent chinese migrants.
DearCoolZ:
Have you forgotten to review these links to find out more about your ancestors eh!
http://www.chinahistoryforum.com/index.php...pic=9353&st=195http://news.bbc.co.uk/1/hi/sci/tech/4435009.stmand these:
Excerpt came from these reports:
Chromosomal DNA variation in east Asian populations and its potential for inferring the people of Korea. Kim W, Shin DJ, Harihara S, Kim YJ. Department of Biology, Dankook University, Cheonan, Choong-Nam, Republic of Korea.
and
Y-Chromosome Evidence of Southern Origin of the East AsianSpecific Haplogroup O3-M122
Hong Shi,1,2,6 Yong-li Dong,3 Bo Wen,4 Chun-Jie Xiao,3 Peter A. Underhill,5 Pei-dong Shen,5 Ranajit Chakraborty,7 Li Jin,4,7 and Bing Su1,2,7
Phylogeographic Differentiation of Mitochondrial DNA in Han Chinese
Yong-Gang Yao,1 Qing-Peng Kong,1 Hans-Jürgen Bandelt,2 Toomas Kivisild,3 and Ya-Ping Zhang1
1Laboratory of Molecular Evolution and Genome Diversity, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; 2Fachbereich Mathematik, Universität Hamburg, Hamburg; 3Department of Evolutional Biology, Institute of Molecular and Cell Biology, Tartu University and Estonian Biocentre, Tartu, Estonia
Received September 20, 2001; accepted for publication December 4, 2001; electronically published February 8, 2002.
To characterize the mitochondrial DNA (mtDNA) variation in Han Chinese from several provinces of China, we have sequenced the two hypervariable segments of the control region and the segment spanning nucleotide positions 1017110659 of the coding region, and we have identified a number of specific coding-region mutations by direct sequencing or restriction-fragmentlengthpolymorphism tests. This allows us to define new haplogroups (clades of the mtDNA phylogeny) and to dissect the Han mtDNA pool on a phylogenetic basis, which is a prerequisite for any fine-grained phylogeographic analysis, the interpretation of ancient mtDNA, or future complete mtDNA sequencing efforts. Some of the haplogroups under study differ considerably in frequencies across different provinces. The southernmost provinces show more pronounced contrasts in their regional Han mtDNA pools than the central and northern provinces. These and other features of the geographical distribution of the mtDNA haplogroups observed in the Han Chinese make an initial Paleolithic colonization from south to north plausible
Y-Chromosome Evidence of Southern Origin of the East Asian–Specific Haplogroup O3-M122
The prehistoric peopling of East Asia by modern humans remains controversial with respect to early population migrations. Here, we present a systematic sampling and genetic screening of an East Asian–specific Y-chromosome haplogroup (O3-M122) in 2,332 individuals from diverse East Asian populations. Our results indicate that the O3-M122 lineage is dominant in East Asian populations, with an average frequency of 44.3%. The microsatellite data show that the O3-M122 haplotypes in southern East Asia are more diverse than those in northern East Asia, suggesting a southern origin of the O3-M122 mutation. It was estimated that the early northward migration of the O3-M122 lineages in East Asia occurred ~25,000–30,000 years ago, consistent with the fossil records of modern humans in East Asia.
Recent Spread of a Y-Chromosomal Lineage in Northern China and Mongolia
We have identified a Y-chromosomal lineage that is unusually frequent in northeastern China and Mongolia, in which a haplotype cluster defined by 15 Y short tandem repeats was carried by 3.3% of the males sampled from East Asia. The most recent common ancestor of this lineage lived 590 ± 340 years ago (mean ± SD), and it was detected in Mongolians and six Chinese minority populations. We suggest that the lineage was spread by Qing Dynasty (16441912) nobility, who were a privileged elite sharing patrilineal descent from Giocangga (died 1582), the grandfather of Manchu leader Nurhaci, and whose documented members formed 0.4% of the minority population by the end of the dynasty.