The Geer DNA Project assists in the identification of male Geer DNA lines and provides researchers a place for sharing information about common Geer DNA heritage.

DNA (Deoxyribonucleic Acid), a molecule found in the nucleus of a cell, contains genetic instructions for building living organisms. This chemical structure, known as the gene, is packaged in 23 pairs of chromosomes. Every human being has 46 chromosomes, 23 received from each parent.

Females receive two X-chromosomes, males one X and one Y. Males with the same Y-chromosome markers (or near same, within 1 or 2 mutations) will likely share a common male ancestor. When combined with traditional genealogical research, DNA provides an accurate picture of paternal ancestry. Often this information will confirm a paper trail of one's family history, but in some cases the results can disprove long standing beliefs.

For more information on DNA see: Genetics & Genealogy - An Introduction With Some DNA Case Study Examples by Charles F. Kerchner, Jr.