For genomic DNA, C. albicans cells were grown in YPD at 30 °C and DNA isolated using a Qiagen Genomic Buffer Set, a Qiagen Genomic-tip 100/G or the MasterPure Yeast DNA Purification kit (Epicentre). DNA was sequenced using Illumina HiSeq 2000 generating 101-bp paired reads. Reads were aligned to the SC5314 reference genome using Burrows–Wheeler Aligner (98 ), and converted to sorted BAM format using Samtools (99 (link)). Picard tools (picard.sourceforge.net/) were used to preprocess the alignments. The Genome Analysis Toolkit (100 (link)) and Pilon (37 (link)) were used to call variant and reference bases from the alignments. Mutations were inspected in IGV (Broad Institute) and annotated using the VCFannotator (Broad Institute). Ploidy, copy number variation, and LOH analyses were performed as described in SI Appendix, Materials and Methods.