
Introns that utilize the proximal AG dinucleotide as a 3′ splice site in the germline are longer than those that do not. Length of introns that utilize the proximal AG in <10% and >10% of junction-spanning reads as well as total C. elegans introns identified in the UCSC Genome Browser. The bottom and top of the boxes are the beginning of the second and fourth quartiles, respectively, with the median represented by the line in the center of the boxes.











