(A) UCSC Genome Browser screenshot from GRCh38. The duplication depth track
indicates duplicated genome sequences as colored bars: white (single copy,
N=1), orange (N=2–4), green (N=5), black
(N>5). DNA sequence coverage tracks were generated in three ways. (1)
Normalized read depth was calculated based on the entire region (red) or (2) by
segmenting into 5 subregions: centromeric to NOTCH2NLA, NOTCH2NLA, between
NOTCH2NLA and NOTCH2NLB, NOTCH2NLB, and telomeric to NOTCH2NLB (green) (STAR
Methods). (3) Average coverage for breakpoints within NOTCH2NLA and NOTCH2NLB is
shown as step function (blue). Where all models agree, the colors combine to
black. (B) Schematic of the NOTCH2NL chromosomal configuration before and after
a duplication or deletion event. See also Figure S7, Table S3–S4.