Genomic DNA was extracted using phenol/chloroform as described previously. Sequencing libraries were prepared using the NEBNext Ultra II FS DNA Library Prep with Sample Purification Beads (NEB# E6177). Quality control and quantification were subsequently performed using an Agilent 2100 Bioanalyzer. Samples were submitted for sequencing on the DNBseq platform at BGI (www.bgi.com/us/home).