Table 3.

Evolutionary pressure analysis on dcNUMT gene clusters for mammals and birds

Evolutionary pressure on dcNUMT gene clustersNo. of clusters mammalsNo. of clusters in birds
Purifying selection (dN/dS < 1)24724
Neutral evolution (dN/dS = 1)72673
Positive selection (dN/dS > 1)231

[i] Shown are the numbers of gene clusters that show clade-specific signatures of purifying selection, neutral evolution, and positive selection, respectively.