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.
The first President of the United States of America under the US Constitution was George Washington (1732-1799), who was elected in 1789 and took the oath of office on April 3 â¦ 0, 1789. Washington was re-elected in 1792 and served as President until March 4, 1797. John Hanson is sometimes referred to as the first American president, although his position was very different from that of a modern-day president.