Fig. 1
From: Origin, evolution, and tissue-specific functions of the porcine repetitive element 1
Characterization of PRE1. a Length distribution of whole PRE1, head–body, and tail. b Nucleotide content of the head–body, tail, and target site duplications (TSD). c GC content of the head–body, tail, and target site duplications (TSD). Different letters above the bars indicate a significant difference (P < 0.01). d, e Distribution of the CG content and OE values in the head–body