From: Overlapping genes in the human and mouse genomes
Types of overlap
5' change1
3' change2
Chi-square goodness-of-fit test3
Same-strand
16 (36%)
28 (64%)
χ2 = 3.27 (p = 0.07)
Different-strand
220 (40%)
327 (60%)
χ2 = 20.93 (p = 4.8e-6)