View source for Family Tree DNA

Family Tree DNA (FTDNA) is the oldest and largest Y-DNA and mtDNA testing company for personal/genealogical usage. They offer both Short Tandem Repeat (STR) testing (in bundles 37 Y-STRs and 111 Y-STRs) as well as Single Nucleotide Polymorphisms (SNPs) through their Big Y-700 test. Prices for these products are available at their [https://www.familytreedna.com/products/y-dna#compare website] and they have sales from time to time. 

The size of a dataset is important as the larger the dataset, the more refinement can be made in placing the family into what is called their [https://isogg.org/wiki/Haplogroup "Haplogroup".] By and large their [https://www.familytreedna.com/public/y-dna-haplotree/A Y-DNA haplotree] is the de facto standard in the genealogy field. Their [https://www.familytreedna.com/public/mt-dna-haplotree/L mtDNA haplotree] currently only is broken down by the [https://www.phylotree.org/ PhyloTree] standard (Build 17, which dates back to Feb 2016 with no plans on updating the standard). FTDNA has stated they will be updating their haplotree as part of their [https://www.familytreedna.com/mtdna-million-mito-project "The Million Mito Project].

The GSMD sponsors the [https://www.familytreedna.com/groups/mayflowersociety/about Mayflower DNA Project] led by Robert "Mike" Terry (Kenneth Whittemore assisting on the Y-DNA side) with Susan Abanor working on the mtDNA side. There are a number of surname projects associated with Mayflower passengers as well as the sons in-law.