Genes Reveal History...

... or, more accurately, herstory.  By the way, I would not call rape "hanky panky."  Ahem.

Story at Nature.com
Check out the interactive map and related stories at the linked story. 

Modern genes yield atlas of ancient inter-ethnic sex

Encounters among populations left marks in the DNA of living people.

Daniel Cossins

13 February 2014

From invasions and migrations to slavery and trade, history is embroidered with events that led to interactions between previously separate populations — and, in many cases, hanky-panky. By mining genetic data from living people, researchers have now created a historical atlas of instances of such mixing.

Blue eyes, light hair and fair skin in Pakistan.  Wonder how much she'll be sold for. 
Photo credit: James L. Stanfield/National Geographic Creative

Caption:  The Kalash people who live in the Hindu Kush Mountains of modern Pakistan carry genes that probably originated in Europe and might have been carried East by the Macedonian Army of Alexander the Great.

The study, published today in Science¹, uses statistical methods to make inferences about which populations interbred, and when, over the past 4,000 years. The findings are also presented as an interactive map. The authors sequenced DNA from 1,490 people from 95 genetically distinct populations around the world, and tested almost 500,000 single-letter variations in DNA known as single nucleotide polymorphisms, or SNPs.