Table 3.

Observed (Expected) Fractions of Hotspots in RefSeq Genes, RefSeq Exons, and ESTs

Species
Mouse
Rat
RefSeq genes 39% (18%) 17% (8%)
RefSeq exons 2% (1%) 2% (0.3%)
ESTs
73% (37%)
49% (18%)

[i] The smaller expected fractions for rat are due to the fact that the rat databases are less complete.