Complex sentence: Since 2005 Genographic has used volunteers (in fieldwork & providing DNA samples) and citizen science projects, encouraged by organizations like International Society of Genetic Genealogy (ISOGG), which have become increasingly focused providing benefits to scientific research.
Split into simpler sentences: Since 2005 Genographic has used volunteers (in fieldwork & providing DNA samples) and citizen science projects. Such outreach for public participation in research has been encouraged by organizations such as International Society of Genetic Genealogy (ISOGG), which is seeking to promote benefits from scientific research.