• Genealogy by Genetics, Ltd. -- Family Tree DNA
• Brigham Young University's Sorenson Molecular Genealogy Foundation
• ancestry.com's genetic genealogy

Links:

Links for the beginner:

• Interpreting Your Test Results -- team Liddell
• Interpreting Genealogical Test Results -- Dorsey surname Project
• DNA 101 -- the Blair DNA Project
• Time to Most Recent Common Ancestry Calculator
• DNA Basics at Contexo.info
• Cyndi's List -- Genetics, DNA & Family Health
• An interesting and light treatment of dna and chromosomes -- DNA intro
• Rootsweb List of Y-Chromosome DNA Studies being undertaken by Family Historians -- One-name genealogy studies using Y-Chromosome DNA testing
• DNA Shows Neandertals Were Not Our Ancestors
• Monkey-Man Hypothesis Thwarted by Mutation Rates
• The Mutation Problem

 Books:

DNA for Family Historians   is easy to read and offers an extremely understandable view of genetics for genealogy. We suggest this primer for everyone interested in understanding the impact of DNA as a genealogical tool.

 Heavier Fare:

• Primer on Molecular Genetics
• Y-STR mutation rates
• Estimating Y chromosome specific microsatellite mutation frequencies using deep rooting pedigrees
• The Problem of Information

The links below were found at: Family Tree DNA - Genealogy by Genetics, Ltd.

• Y Comparison  is a wonderful page of several dozen of our surname project customers and a very nice analysis between Haplogroups #1 and 2.
• NOVA - Building a Y-DNA based Family Tree   For those of you who would like to play a simple game using the Y chromosome to identify relatives you may do so by visiting the NOVA web site. However, a few notes of caution: 1) You will need to download Macro Media's "Shockwave" to play, and 2) the game is simplistic and tends to minimize the complexity of the science behind the science.
• Sephardim  is a Research Tool for Sephardic Genealogy.  This site lists thousands of Sephardic Surnames and other Heraldry.
• Family Tree DNA in the News  First, we would like to share with you some excerpts of publications that gave Family Tree DNA exposure for its work and leadership in the field of genealogy by genetics.
• Jewishgen  was our first marketing partner when we launched our service in mid 2000.  They had the vision to recognize that DNA testing would become a viable alternative to the roadblock when the paper trail goes cold.
• NATURE  The original article on the Cohanim describes how a group of scientists sought and found clear differences in the frequency of Y-chromosomes haplotypes between Jewish priests and their lay counterparts.
• Ethnic Groups Comparison  In a May 9th, 2000 article that quickly made its way to the New York Times, Dr. Michael Hammer compared 7 different Jewish populations to the localized non-Jewish communities and included an additional 15 ethnic groups for a further bases of comparison.  The article is quite technical, but an executive summary is available from the National Academy of Sciences as an Abstract.
     The entire article, with valuable charts, diagrams and more detail than most laymen will want is available at the same site in a full text version.