From: Patterns of expansion and expression divergence in the plant polygalacturonase gene family
 | Out of duplicated regions* | Within duplicated regions* | ||||
---|---|---|---|---|---|---|
 |  |  | With match†| Without match†| ||
 | Number of genes | Expression‡ | Number of genes | Expression‡ | Number of genes | Expression‡ |
Singular | 4 | 3 | 11 | 9 | 27 | 21 |
Tandem | 3 | 0 | 10 | 8 | 11 | 4 |
Total | 7 | 3 | 21 | 17 | 38 | 25 |