<p>As its name it is, there are several As. To make this Poly A, there is needed polyadenylation.&nbsp;<strong>[[Polyadenylation</strong>]]&nbsp;is the addition of a&nbsp;<strong>poly(A) tail</strong>&nbsp;to a mRNA. The poly(A) tail consists of multiple adenosine monophosphates; in other words, it is a stretch of RNA that has only adenine&nbsp;bases. In eukaryotes, polyadenylation is part of the process that produces mature mRNA for translation. It, therefore, forms part of the larger process of gene expression.</p>