Fig. 4.

Best three data blocks for each UCE. Graphical representations of the best three data block for each UCE of each data set (see table 1) as indicated by the SWSC method. Each line in each plot represents a single UCE split in three data blocks. Black indicates the position of the central window, which may loosely correspond to what is often called the core region of UCEs, and gray indicates the position of the edge windows, which may loosely correspond to what is often called the flanking regions of UCEs. Each row of panels represents a single data set (see table 1), and each column of panels represents a metric measured for each site in a UCE. EN denotes the entropy of a site, GC denotes the GC content of a site, and MU denotes the multinomial likelihood of a site. UCEs are organized by increasing length. Asterisks (*) indicate UCEs smaller than 150 bp, which were not split into three data blocks but kept as a single data block (see details in the Materials and Methods: Sliding-Window Site Characteristics).