Complex sentence: Family Tree DNA originally partnered with the University of Arizona for testing, Greenspan and Blankfeld started their own testing laboratory in Houston, Texas under the Genealogy by Genetics, Ltd. parent company in 2007.
Split into simpler sentences: Family Tree DNA originally partnered with the University of Arizona for testing. However, Greenspan and Blankfeld started their own testing laboratory in Houston, Texas under the Genealogy by Genetics, Ltd. parent company in 2007.