need to blast several genes;100-1000,unspecifie d(stored as a array of sequences), against 40 complete genomes to ascertain presence absence factor. if present, need to take the boundaries of the genes, extract the section from main genome for further analysis. results required here: 1. true false for presence and subsequent basepair positions span. 2. extracted sections within the Bp range per genome concatenated into one sequence and all genomes return single sequence each