Welly boots
As these parchments have been handled by umpteen humans how do the boffins avoid contamination of the DNA?
Or maybe the sheep were already contaminated :(
I'll get my coat, it's the sheepskin one.
Top-level boffins say they have discovered a valuable new tool for mapping the genetic history of sheep: namely, the extraction of DNA from old documents, which are generally written on parchment made from the skin of sheep or other animals. It seems that before such modern innovations as mass production of paper, typewriters …
You'd need a really large and comprehensive sample to piece pedigrees together..
Parchment was both locally produced, but also heavily traded across well.. the world. Many pieces of parchment were also recycled (scraped) , bound, rebound, cut up, etc. The stuff ended up all over the place, so you'd need to do quite a bit of sampling to get a comprehensive picture, and prevent tagging, say, italian sheep as a british breed.
Still, impressive work.
This analysis will obviously be biassed towards breeds that produce good parchment.
Where you have breeds that are good eatin' but the parchment is crap, they won't be well-represented. Similarly where you have extensive use of barbed wire, you get (more) holes in the sheep, and therefore in the parchment, and it's useless.
(This is why they keep the cows for Bentley leather in fields without barbed wire...)
Otherwise a great idea - but they can't have my deeds.
+1 for the joke, but I think historic ink was more likely made from iron and oak galls than squid.