Figure 3: Intron sizes are conserved among gymnosperms.
From: The Norway spruce genome sequence and conifer genome evolution
a, b, Intron size comparisons between P. abies, P. sylvestris (a) and G. gnemon (b), respectively. Orthologues of introns that were categorised as short (50–300 bp) or long (1–20 kb) in P. abies were identified in P. sylvestris and G. gnemon, and the corresponding intron size was scored.
