thresh P-value %words %seq Nwords Nseq total_words total_seq 7.5796 5.0e-05 20.0% 18.0% 9 9 45 50 7.1311 0.0001 46.7% 42.0% 21 21 45 50 5.9295 0.0005 64.4% 60.0% 29 30 45 50 5.0755 0.001 82.2% 74.0% 37 37 45 50