The features and frequencies of predicted stems for various species.

Note. Left to right we have the given species, the number of randomly selected large intron fragments (50 kilobases), the average number of stems per 50 kilobases, the average stem length, the average minimum free energy (MFE) of the stems, and the average loop size of the stems (in kilobases). All predicted stems were filtered to be less than or equal to −60 kcal/mol.