The output of BAIT, displaying the read counts for both Watson (W, green) and Crick (C, blue) strands. Each read count bar shows the number of reads aligned to a particular 200-kb bin of the reference genome. From here, parental template strand inheritance is inferred. For instance, if both copies of a 200-kb chromosomal segment in the daughter cell were synthesized from Watson template strands in the parent cell, this would be represented by a large green bar indicating purely W alignment in that chromosomal region. In addition, switches between homozygous and heterozygous states of template strand inheritance are interpreted as sister chromatid exchanges (SCEs).