Fig. 1

Characteristics of homology search of unigene sequences aligned by BlastX to the NR database. a E-value distribution of BlastX hits for each unique sequence with an E-value threshold of 1.0E−5. b Similarity distribution of top BlastX hits for each unigene. c Species distribution of the top BlastX hits for each unigene sequence with a cut-off E-value of 1.0E−5