Peoples and personalities. What did DNA analysis show?

DNA genealogy is a young science related to that field of natural science that considers the dynamics of the accumulation of mutations in human DNA. These studies give historians additional opportunities for studying ancient eras. The data obtained can answer many questions around which centennial disputes. DNA genealogy can work with both modern and old DNA, extracted from crypts and caves, as well as those that have been laid in museum reserves for a long time.
How can you set the age of the bone remains? Who in his book was mentioned by Julius Caesar? Who married Scythians? Where did the Basques come from? What genealogical family does Stalin, Napoleon, Einstein and Zhirinovsky belong? What are the further prospects of DNA genealogy?