Table 2 Properties of segregating genes differ across frequency classes.

Wilcoxon test, ***P < 0.001, **P < 0.01, *P < 0.05; P values are comparison of singleton versus nonsingleton genes and singleton versus high-frequency (≥ 3/6) genes. FPKM and transcript length estimates are medians; exon numbers are means.

SingletonNonsingletonHigh-frequency
FPKM5.76***/***9.9112.31
Transcript length (bp)723**/***8691312
Exon number1.38*/**1.531.81