Bacterial genome sequencing has come to be so easy and on hand that the genomes of more than one traces of increasingly more character species had been and will be generated. These statistics sets offer for in-intensity analysis of intra-species range from numerous factors. The pan-genome evaluation, wherein the size of the gene repertoire on hand to any given species is characterized collectively with an estimate of the range of entire-genome sequences required for proper analysis, is being an increasing number of carried out. Different fashions exist for the evaluation and their accuracy and applicability rely on the case to hand. Here we speak present-day fashions and recommend a new model of broad applicability, along with examples of its implementation.