Agriculture driving male expansion in Neolithic Time

Agriculture driving male expansion in Neolithic Time
Chuan-Chao Wang, Yunzhi Huang, Shao-Qing Wen, Chun Chen, Li Jin, Hui Li
(Submitted on 27 Nov 2013)

The emergence of agriculture is suggested to have driven extensive human population growths. However, genetic evidence from maternal mitochondrial genomes suggests major population expansions began before the emergence of agriculture. Therefore, role of agriculture that played in initial population expansions still remains controversial. Here, we analyzed a set of globally distributed whole Y chromosome and mitochondrial genomes of 526 male samples from 1000 Genome Project. We found that most major paternal lineage expansions coalesced in Neolithic Time. The estimated effective population sizes through time revealed strong evidence for 10- to 100-fold increase in population growth of males with the advent of agriculture. This sex-biased Neolithic expansion might result from the reduction in hunting-related mortality of males.

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1 thought on “Agriculture driving male expansion in Neolithic Time

  1. I heard of the same study or a similar one. The Y DNA haplogroup that went through the biggest expansion and growth is R1b1a2a1a L11 or just R1b period in west Europe. 5,000 years ago there was probably only one to three men with R1b(R1b L11?) or only a tribe or a few of mainly R1b1a2a1a L11 men in central Europe. 2,000 years later the majority of west European men had Y DNA R1b1a2a1a L11 like today. I have heard that the estimates say it happened mainly in the copper and bronze age not the begging and spread of farming. In my opinion there is no doubt R1b1a2a1a L11 was spread by Indo European Germans, Celts, and Italians. A similar thing happened in eastern-central Europe and Scandinavia when Corded ware culture spread around 4,500-5,000ybp. Y DNa R1a1a1b1 Z283 became the most popular Y DNA haplogroup in those areas except Scandinavia where I1a Df29 may have been a little more popular. The same thing happened with the spread of Indo Iranian and probably Tocharian languages in Asia and Y DNA R1a1a1b2 Z93. I think that R1b1a2a1a L11 in west Europe also has a Indo European source.

    I have noticed many people have a variety of mtDNA haplogroups that have been separated for like 50,000 years and only one or a few Y DNA haplogroups. Conquest and elite Indo European men can be part of the reason why their y DNA haplogroup’s became so popular. But how do you explain other people like Native Americans, Arabs, Han Chinese, etc. who also have majority one haplogroup but a variety of mtDNA haplogroups that have been separated for so long.

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