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.
George Washington (1732-1799) was the first President of the United States of America under the US Constitution. He was elected in 1787 and again in 1792 and served as President from April 30,1789 until March 4, 1797. Sometimes, John Hanson is referred to as the first US president due to his ancestoâ¦.