Whole-Genome Bisulfite Sequencing for the Methylation Analysis of Insect Genomes

: DNA methylation is a conserved epigenetic modification of animal genomes, but genome methylation patterns appear surprisingly diverse in insects. Whole-genome bisulfite sequencing (WGBS) represents a sensitive and robust method for the characterization of genome-wide methylation patterns at single-base resolution. Here, we describe a step-by-step protocol for the generation and analysis of WGBS datasets using standard Illumina sequencing platforms. In comparison to whole-genome sequencing, WGBS has additional caveats that require particular attention and are highlighted in this chapter.