def make_histogram(region,region_info,outdir,great_ape_gene_hashes):

    print region_info.name

    plt.rc('grid',color='0.75',linestyle='l',linewidth='0.1')
    f=plt.figure()
    f.set_figwidth(10)
    f.set_figheight(10)
    nbins=0
    mx=0
    mn=100