Fig. 1.

—Sliding window approach to visualize the usage of nucleobases per position in genomic regions of selected RNA helicase genes. For VASL, MEM, and MAA3, the number of different nucleobases comprised in the allelic variants was plotted for all variants of apomictic (blue), facultative apomictic (green), sexual accessions (red), or all accessions (black) with a binning of 12 bases per datapoint. Orange boxes below symbolize exons, blue boxes UTRs, and gray bars noncoding regions. For all genes, a higher sequence variability was observed in noncoding regions as compared with exonic regions or UTRs.