Table 3. Characteristics of B. mori exons and introns.

Exon
Total number of exons	51,590
No of exons per transcript
Mean	4.8
Median	4.0
Exon length, bp
Max	8,783
Mean	353
Median	179
Min	27
Intron
Intron length, bp
Max	109,257
Mean	1904
Median	730
Min	34