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 name of the U.S. President is Barack Obama. He has held this  position since 2009. The President of the United States of America is Barack Obama.Alabama The President of the United States is Barack Obama.he name of the U.S. President is Barack Obama. He has held this  position since 2009. The President of the United States of America is Barack Obama.