Showing posts with label ancient dna. Show all posts
Showing posts with label ancient dna. Show all posts

Monday, December 6, 2021

Interactive Visual Ancient DNA Database Map

 


  • Click the settings wheel to choose heat map or cluster map, or to reset map.
  • Circular arrow on top right to reset map
  • + - buttons to zoom in or out
  • In the search bar, type country, group id, y haplogroup or mtDna haplogroup to only show matching samples. can clear the sort from the bottom right.
  • Once on a sample, click info to see various info on that sample. Multiple samples from same site will be clustered together. Can view each by clicking next arrow.
  • Best viewed on PC (and firefox browser apparently).
  • I will be adding samples as I see new aDna papers. Link me papers which I have missed. Thanks.

Friday, November 5, 2021

East, West & Basal Eurasian components in select ancient samples from the paleolithic and neolithic

I am working on some qpGraphs to figure out the different Iran farmer like ancestries in Ganj Dareh, CHG, TepeAbdulHosein, Hotu cave, Wezmeh cave, SC Asia (Sarazm) and India etc. Its taking longer than I expected because of many populations adding complexity. 

So I thought i would use the graphs already made to shed some light on some Eurasian samples. When I publish qpGraphs please keep some things in mind while analyzing.

Tuesday, November 2, 2021

Ancient ancestral south indians (AASI) came from the east, not straight from Africa!

From Hallast, P., Agdzhoyan, A., Balanovsky, O. et al. A Southeast Asian origin for present-day non-African human Y chromosomes. Hum Genet 140, 299–307 (2021). https://doi.org/10.1007/s00439-020-02204-9 

A very good paper which throws some light on the post out of africa peopling of Eurasia, based on analysis of Y- haplogroups of ancient as well as modern samples.
Here, we show that phylogenetic analyses of haplogroup C, D and FT sequences, including very rare deep-rooting lineages, together with phylogeographic analyses of ancient and present-day non-African Y chromosomes, all point to East/Southeast Asia as the origin 50,000–55,000 years ago of all known surviving non-African male lineages (apart from recent migrants). This observation contrasts with the expectation of a West Eurasian origin predicted by a simple model of expansion from a source near Africa, and can be interpreted as resulting from extensive genetic drift in the initial population or replacement of early western Y lineages from the east, thus informing and constraining models of the initial expansion.
Presence of haplogroups C, D and F in 2302 present-day samples.
Presence of haplogroups C, D and F in 2302 present-day samples. The map demonstrates how many of the three haplogroups of interest (none, one, two, or all three) were found in different areas of the Old World and Near Oceania. Black dots indicate the locations of the studied populations