A SNP is a variation of a single nucleotide between individuals. These polymorphisms can therefore be used to discern small differences both within a population and among different populations.
President of the United States. The President of the United States is the head of state of the U.S., the chief executive of the federal government, and Commander-in-Chief of the armed forces. The United States was the first nation to create the office of President as the head of state in a modern republic.
President Benjamin Harrison. Benjamin Harrison is the only United States president elected from the State of Indiana. Not only was he the 23rd president (serving from 1889-1893), but he was also the centennial president, inaugurated 100 years after George Washington.