So it is setup by when they are found and entered? Makes it somewhat confusing for me and maybe others because it is helpful to see the branches and offshoots in order to make sense of when they emerged with periodical time frames. Is there somewhere I may be able to see something like this?
Can you please explain to me why L2 and Z36 always show as being above Z56 in the R1b phylogenetic tree? Shouldn't it be on top of the others if it is quite a bit older? http://www.isogg.org/tree/ISOGG_HapgrpR.html
Maybe I don't understand how to read the tree...
Since nobody can quite agree on the best approach to dating SNPs, it is definitely not based on age. The SNPs are usually shown in the order that they are found, so that is why L2 is showing first. Z36 and Z56 were probably found on the same day, so again, just a matter of which mutation got named first.