The researchers compared the differences between the Y chromosomes of 1,200 men from 26 countries (data were collected in the framework of the project "1000 genomes"). The chromosome inherited only through the male line (from father to son).

Most researchers were struck by the frequent episodes of explosive growth of the male population. The first time such phenomena have been observed 50-55 thousand years ago in Asia and Europe and 15 thousand years ago in America. Special attention was drawn to a sharp jump in the male population in Western Europe, associated with the descendants of one of the "kings" of the bronze age.

"Half of the Europeans — the descendants of one person. Genetics does not tell us why it happened — we can only come up with hypotheses. The reason for this sudden technological leap, the fruits of which was controlled by a small group of men. This elite ruled the population and its reproduction," — said co-author of a scientific article, Chris Tyler-Smith.

Apparently, unknown to the monarch was represented by the organizers of the "new order" in Europe: a hierarchically organized society, which replaced more egalitarian and Autonomous communities of the stone age. Processing of metal and the invention of the wheel gave the elite the resources needed for military victories and subjugation of the rest of the population.

In 2015, geneticists have found that most modern men-Europeans are the descendants of only three genera of the bronze age. This was made possible thanks to the chiefs and warriors and associated with their activities demographic growth which began approximately 4000 years ago and ended at the turn of the old and the new era.