"The American Robin is the largest, most abundant and broadly distributed thrush in North America. The presence of this songster in the backyard setting, together with its loud, musical voice, make it one of the most recognizable birds in North America. Indeed, the American Robin has been described as "America's favorite songbird" (Young 2012)".
The chemical formula would be CTGA or any of the combinations of the four nitrogenous bases The nucleotide is made up of four bases which makes it a tetranucleotide and the arrangement of each bases create a linear geometry.