From: Comprehensive analysis of the pseudogenes of glycolytic enzymes in vertebrates: the anomalously high number of GAPDH pseudogenes highlights a recent burst of retrotrans-positional activity
Number of Syntenic Pseudogene Pairs
human ⇔ chimp
64
human ⇔ mouse
4
human ⇔ rat
3
mouse ⇔ rat
135