Supplementary Figure 1: Number and length distributions of the inferred fosmids.

Fosmid were inferred by mapping each pool’s sequence reads to hg19. We retained only those reads that mapped to within a 3~50 kb region. (a) Fosmid number in each pool. On average, there were ~32 fosmids per pool. (b) Fosmid size. The average length was 36.8 kb.