Figure 6.
siRNA targeting and conservation of the palindrome-rich region as a function of age. Each Ji or Opie LTR was first split in 100 equally sized windows of ∼13 nt. (A) Number of siRNA species of the immature ear library per nucleotide of the sense (positive y-axis) and antisense (negative y-axis) strands of very young (VY), middle-aged (MA), and very old (VO) elements (see Supplemental Table S4 for their population sizes). The average of each window is depicted instead of a box plot as in Figure 2A. (B) Distribution of palindromes. (C) Distribution of nucleotide substitutions identified during LTR pair alignment.
