# Day 2: Population Stratification Session (11 AM)
**URL:** https://isgw-forum.colorado.edu/t/day-2-population-stratification-session-11-am/499
**Category:** ISG Workshop Logistics
**Tags:** 2023
**Created:** [March 7, 2023, 1:15pm UTC](https://isgw-forum.colorado.edu/t/day-2-population-stratification-session-11-am/499 "2023-03-07T13:15:09Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@a.abdellaoui](https://isgw-forum.colorado.edu/u/a.abdellaoui)
#### Post date: [March 7, 2023, 1:15pm UTC](https://isgw-forum.colorado.edu/t/day-2-population-stratification-session-11-am/499/1 "2023-03-07T13:15:09Z")
Hi all,
Post any substantive questions about the population stratification under the “Theory and background” channel. Post questions about the practical here (“Logistics”).
During the population stratification session, there will be a short practical. You can copy all the files you need for this practical to your own directory by first going to your own directory (cd ~) and type the following command:
_cp r /home/abdel/PCA\_practical ._
(don’t forget the dot at the end)
(and don’t worry if you haven’t done this before we started, we will do this together during the practical as well)
This folder contains a copy of the slides (which will have all the commands on them), a separate file commands.txt with all the commands we will use, a folder with pdfs of the papers in case you’ll want more details someday, and a “results” folder that has all the files of a successfully run practical in case something doesn’t work.
Looking forward to it!
Best wishes,
Abdel
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### Author:  [@murray.falconer](https://isgw-forum.colorado.edu/u/murray.falconer)
#### Post date: [March 7, 2023, 5:04pm UTC](https://isgw-forum.colorado.edu/t/day-2-population-stratification-session-11-am/499/2 "2023-03-07T17:04:12Z")
Interesting book on the effects of genetic drift and fixation: The Island of the Colourblind by Oliver Sacks.
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### Author:  [@JML](https://isgw-forum.colorado.edu/u/JML)
#### Post date: [January 11, 2024, 11:47pm UTC](https://isgw-forum.colorado.edu/t/day-2-population-stratification-session-11-am/499/3 "2024-01-11T23:47:41Z")