Below are random neutral coalescent genealogies for a sample of nine individuals with θ = 10. Some trees may have branches that overlap (still need to work out this bug), so you may need to refresh a few times. Hover over alleles to trace ancestry. Source code available on Github. Please feel free to use this for any classes or demonstration as you like (please include attribution), or make additions (the license is GPL2). If you do use it for a course, I'd love to know; email me at vsbuffalo at Google's mail service.