GD13a

From
https://www.biorxiv.org/content/biorxiv/early/2016/06/18/059568.full.pdf
The genetics of an early Neolithic pastoralist from the Zagros,Iran.

Fig. 1. GD13a appears to be related to Caucasus Hunter Gatherers and to modern South Asian populations.     A)  PCA  loaded on modern populations (represented by open symbols).  Ancient individuals (solid symbols) are projected onto these axes.

Lactase persistence

From the supplemental material of:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5702378/
World-wide distributions of lactase persistence alleles and the complex effects of recombination and selection
Anke Liebert,1,3 Saioa López,1 Bryony Leigh Jones,1 Nicolas Montalva,1,2,4 Pascale Gerbault,1,5 Winston Lau,1 Mark G. Thomas,1 Neil Bradman,6 Nikolas Maniatis,1 and Dallas M. Swallow

Table S4

From the supplemental material of
https://www.biorxiv.org/content/early/2018/03/31/292581

Mixture proportions for South Asian populations.

From Lazaridis et. al.
https://www.biorxiv.org/content/biorxiv/early/2016/06/16/059311.full.pdf
Supplemental material:
https://www.biorxiv.org/content/biorxiv/suppl/2016/06/16/059311.DC1/059311-1.pdf

Ubiquitous Steppe_EMBA

From Figure 4 of
https://www.biorxiv.org/content/biorxiv/early/2016/06/16/059311.full.pdf

Steppe_EMBA & Steppe_MLBA

From Figure 5 of The Genetic Structure of the World's First Farmers
https://www.biorxiv.org/content/biorxiv/early/2016/06/16/059311.full.pdf

Genetic Drift

By Gringer - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=23655974