For the purpose of this project, I define a haplogroup class as that found before the hyphen in a haplogroup name. They're not all basal haplogroups as most are derived.

The FTDNA database has 0 haplogroups and 792,871 SNPs. The latter does not include INDELs. They will be studied later. Of those SNPs, 1 are recurrent in up to six haplogroups. This leaves 732,462 non-recurrent SNPs. At somepoint in the near future, all recurrent SNPs will be marked as such in the databases.

Each SNP's haplogroups are sorted by class, as defined above. Of those, 0 are singly recurrent in separate classes. In other words, they are recurrent in totally different branches of the global tree. That's a totally reasonable situation. I've reclassified them as non-recurrent. However, there are 3 additional SNPs that are presently recurrent in path. These are SNPs that appear in both the child and parent haplogroups. They can be fixed programmatically.

There's presently a total of 732,462 SNPs for which no further study is required.

We end up with 0 recurrent SNPs that need to be studied. I've yet to complete a successful algorithm. While doing this work, though, I have found recurrent SNPs that share an MRCA with one another within about only three or four degrees upstream. Feel free to look at them. Are any of them in path?