1. DamID: Genomic DNA was isolated using the Bioline Isolate II Genomic DNA Kit; 2. RNA-seq: RNA was isolated using the Qiagen RNeasy column purification kit; 3. Repli-Seq: cells were harvested by centrifugation and immediately fixed in ice-cold ethanol. 1. DamID: the full protocol is described in Leemans, 2019, except that the DpnII digestion is omitted. 500 ng of genomic DNA was digested at m6A-methylated GATC sequences with DpnI and ligated to adapters. DNA fragments were amplified and further processed with end-repair, 3A-overhang tailing and Y-shaped adapter ligation, before a final round of 10-12 PCR cycles with illumina index adapters; 2: RNA-seq: sequencing libraries were prepared using the Illumina TruSeq polyA stranded RNA kit; 3: replicated DNA was enriched for with a BrdU IP, before libraries were prepared as described in Marchal, 2018. 1. OTHER: DamID; 2. RNA-seq; 3. OTHER: Repli-seq