Fig. 5

Distribution of pass intronic variants number. a Distribution of pass intronic variants in intronic regions flanking exons (200 bp). The least variant number in the intronic regions flanking exons within 150bps was at +2 and −2 positions which was less than the +1 and −1 positions. After the second position, these variant number gradually raised and reaching the largest number at the +9 and −9 positions. Then it gradually decreased with ups and downs. The number basically decreased with decreasing sequencing depth. b Distribution of pass intronic variants in intronic regions flanking exons (10 bp). The largest variant number 123,696 was at the +9 and −9 positions, and then the number gradually decreased with ups and downs