thresh P-value %words %seq Nwords Nseq total_words total_seq 7.3493 0.0001 15.4% 16.3% 714 695 4629 4268 5.9329 0.0005 55.4% 62.4% 2564 2664 4629 4268 5.2589 0.001 69.0% 77.9% 3193 3325 4629 4268