This chapter reviews anthropological genetic inquiries into the population dynamics in the Caucasus. Genetic and genomic methods are introduced along with the problems of identifying specific regions of origins for genetic populations. Also discussed are the general genetic characteristics of the Caucasus and neigboring areas of the Near East and steppe; gene-language-geography studies; genetic affinities between Maikop kurgan burials and contemporary South Caucasus peoples; the phylogeography of maternal and paternal lineages in the Caucasus and western Asia; revelations about Caucasus prehistory derived from ancient genomics; the putative connection between the spread of farming, Indo-European languages, and Y-chromosome lineages; the timing of the split between Caucasus and European hunter-gatherer groups; and questions as to the role of Caucasus hunter-gatherers in the peopling of continental Europe.

So far, we have focused on DNA types in which one allele is from the father and one from the mother. However, three other sources of DNA come from only one parent, and all can be employed in forensic testing. One is mitochondrial DNA (from the mother in all her children), and the other two are STR sites on the Y chromosome (from the father in his sons) and STR sites on the X chromosome (from the mother in her sons). These DNA sources are lineage markers, since they can be traced back generations through our family trees. Lineage markers are valuable in missing person cases where DNA from the person of interest is not available. Mitochondrial DNA (mtDNA) has been used in historical cases, such as identifying soldiers killed in past conflicts. We will explore these and other examples in this chapter.